GB8721322D0 - Telephone ringing circuit - Google Patents

Telephone ringing circuit

Info

Publication number
GB8721322D0
GB8721322D0 GB878721322A GB8721322A GB8721322D0 GB 8721322 D0 GB8721322 D0 GB 8721322D0 GB 878721322 A GB878721322 A GB 878721322A GB 8721322 A GB8721322 A GB 8721322A GB 8721322 D0 GB8721322 D0 GB 8721322D0
Authority
GB
United Kingdom
Prior art keywords
ringing circuit
telephone ringing
telephone
circuit
ringing
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.)
Pending
Application number
GB878721322A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB878721322A priority Critical patent/GB8721322D0/en
Publication of GB8721322D0 publication Critical patent/GB8721322D0/en
Priority to GB8818487A priority patent/GB2209907B/en
Pending legal-status Critical Current

Links

GB878721322A 1987-09-10 1987-09-10 Telephone ringing circuit Pending GB8721322D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB878721322A GB8721322D0 (en) 1987-09-10 1987-09-10 Telephone ringing circuit
GB8818487A GB2209907B (en) 1987-09-10 1988-08-03 Telephone ringing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878721322A GB8721322D0 (en) 1987-09-10 1987-09-10 Telephone ringing circuit

Publications (1)

Publication Number Publication Date
GB8721322D0 true GB8721322D0 (en) 1987-10-14

Family

ID=10623578

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878721322A Pending GB8721322D0 (en) 1987-09-10 1987-09-10 Telephone ringing circuit
GB8818487A Expired - Fee Related GB2209907B (en) 1987-09-10 1988-08-03 Telephone ringing circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8818487A Expired - Fee Related GB2209907B (en) 1987-09-10 1988-08-03 Telephone ringing circuit

Country Status (1)

Country Link
GB (2) GB8721322D0 (en)

Also Published As

Publication number Publication date
GB2209907A (en) 1989-05-24
GB8818487D0 (en) 1988-09-07
GB2209907B (en) 1991-05-29

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