CA174975A - Telephone switchboard - Google Patents
Telephone switchboardInfo
- Publication number
- CA174975A CA174975A CA000174975A CA174975DA CA174975A CA 174975 A CA174975 A CA 174975A CA 000174975 A CA000174975 A CA 000174975A CA 174975D A CA174975D A CA 174975DA CA 174975 A CA174975 A CA 174975A
- Authority
- CA
- Canada
- Prior art keywords
- telephone switchboard
- switchboard
- telephone
- 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 |
---|---|---|---|
CA174975T | 1915-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA174975A true CA174975A (en) | 1917-02-06 |
Family
ID=45294628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000174975A Expired CA174975A (en) | 1915-12-01 | 1915-12-01 | Telephone switchboard |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA174975A (en) |
-
1915
- 1915-12-01 CA CA000174975A patent/CA174975A/en not_active Expired
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