CA89517A - Ringing key for telephone switchboards - Google Patents
Ringing key for telephone switchboardsInfo
- Publication number
- CA89517A CA89517A CA000089517A CA89517DA CA89517A CA 89517 A CA89517 A CA 89517A CA 000089517 A CA000089517 A CA 000089517A CA 89517D A CA89517D A CA 89517DA CA 89517 A CA89517 A CA 89517A
- Authority
- CA
- Canada
- Prior art keywords
- ringing key
- telephone switchboards
- switchboards
- telephone
- 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.)
- Expired
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA89517T | 1904-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA89517A true CA89517A (en) | 1904-10-11 |
Family
ID=45206052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000089517A Expired CA89517A (en) | 1904-05-04 | 1904-05-04 | Ringing key for telephone switchboards |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA89517A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823867A (en) * | 1981-09-11 | 1989-04-25 | Pollard Raymond J | Fluid flow apparatus |
-
1904
- 1904-05-04 CA CA000089517A patent/CA89517A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823867A (en) * | 1981-09-11 | 1989-04-25 | Pollard Raymond J | Fluid flow apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA89517A (en) | Ringing key for telephone switchboards | |
CA89518A (en) | Ringing key for telephone switchboards | |
CA88514A (en) | Telephone switchboard | |
CA94343A (en) | Signal for telephone switchboards | |
CA90482A (en) | Telephone call mechanism | |
CA92403A (en) | Telephone | |
CA89663A (en) | Bell ringer | |
CA93650A (en) | Telephone call | |
CA101319A (en) | Telephone switchboard | |
CA82768A (en) | Telephone switchboard | |
CA90020A (en) | Telephone selecting system | |
CA88314A (en) | Telephone transmitter | |
CA88245A (en) | Telephone apparatus | |
CA95088A (en) | Telephone apparatus | |
AU278705A (en) | Telephone calls | |
CA90597A (en) | Telephone register | |
CA94005A (en) | Telephone directory | |
CA94037A (en) | Telephone directory | |
CA83308A (en) | Telephone lock | |
CA90583A (en) | Telephone mouthpiece | |
CA87722A (en) | Telephone cut-out | |
CA88466A (en) | Signal for telephone switch boards | |
CA103816A (en) | Telephone exchange apparatus | |
CA94859A (en) | Telephone toll line system | |
CA102063A (en) | Telephone |