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GB2248132B - Cordless doorchime - Google Patents

Cordless doorchime

Info

Publication number
GB2248132B
GB2248132B GB9020672A GB9020672A GB2248132B GB 2248132 B GB2248132 B GB 2248132B GB 9020672 A GB9020672 A GB 9020672A GB 9020672 A GB9020672 A GB 9020672A GB 2248132 B GB2248132 B GB 2248132B
Authority
GB
United Kingdom
Prior art keywords
doorchime
cordless
cordless doorchime
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9020672A
Other versions
GB9020672D0 (en
GB2248132A (en
Inventor
Thomas Robert Meek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9020672A priority Critical patent/GB2248132B/en
Publication of GB9020672D0 publication Critical patent/GB9020672D0/en
Publication of GB2248132A publication Critical patent/GB2248132A/en
Application granted granted Critical
Publication of GB2248132B publication Critical patent/GB2248132B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
GB9020672A 1990-09-21 1990-09-21 Cordless doorchime Expired - Fee Related GB2248132B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9020672A GB2248132B (en) 1990-09-21 1990-09-21 Cordless doorchime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9020672A GB2248132B (en) 1990-09-21 1990-09-21 Cordless doorchime

Publications (3)

Publication Number Publication Date
GB9020672D0 GB9020672D0 (en) 1990-10-31
GB2248132A GB2248132A (en) 1992-03-25
GB2248132B true GB2248132B (en) 1995-02-15

Family

ID=10682590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9020672A Expired - Fee Related GB2248132B (en) 1990-09-21 1990-09-21 Cordless doorchime

Country Status (1)

Country Link
GB (1) GB2248132B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0682329T3 (en) * 1994-05-13 2000-06-05 Fred M Schildwachter & Sons In Combined audible and visual signaling device
PE20160647A1 (en) 2015-12-31 2016-07-08 Sanchez-Concha Rodrigo Coquis DEVICE FOR THE TREATMENT AND ELIMINATION OF BACTERIA IN COMBUSTIBLE HYDROCARBONS AND PROCESS FOR THEIR MANUFACTURE AND THE ACTIVATION OF THEIR SURFACE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523193A (en) * 1983-11-21 1985-06-11 Levinson Samuel H Remote-controlled doorbell signal receiver
FR2584215A1 (en) * 1985-06-27 1987-01-02 Krampner Roger Ringing device remotely controlled by a radio transmitter
FR2608814A1 (en) * 1986-12-17 1988-06-24 Gondry Laurent Compact bell for calling over a distance, with coded and personalised radio frequency transmission
GB2205433A (en) * 1987-06-02 1988-12-07 Shree Prakash Korde Doorbell operated by radio or ultrasonic waves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523193A (en) * 1983-11-21 1985-06-11 Levinson Samuel H Remote-controlled doorbell signal receiver
FR2584215A1 (en) * 1985-06-27 1987-01-02 Krampner Roger Ringing device remotely controlled by a radio transmitter
FR2608814A1 (en) * 1986-12-17 1988-06-24 Gondry Laurent Compact bell for calling over a distance, with coded and personalised radio frequency transmission
GB2205433A (en) * 1987-06-02 1988-12-07 Shree Prakash Korde Doorbell operated by radio or ultrasonic waves

Also Published As

Publication number Publication date
GB9020672D0 (en) 1990-10-31
GB2248132A (en) 1992-03-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980921