GB8721322D0 - Telephone ringing circuit - Google Patents
Telephone ringing circuitInfo
- 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
Links
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) |
-
1987
- 1987-09-10 GB GB878721322A patent/GB8721322D0/en active Pending
-
1988
- 1988-08-03 GB GB8818487A patent/GB2209907B/en not_active Expired - Fee Related
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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