CA491719A - Telephone system - Google Patents
Telephone systemInfo
- Publication number
- CA491719A CA491719A CA491719A CA491719DA CA491719A CA 491719 A CA491719 A CA 491719A CA 491719 A CA491719 A CA 491719A CA 491719D A CA491719D A CA 491719DA CA 491719 A CA491719 A CA 491719A
- Authority
- CA
- Canada
- Prior art keywords
- telephone system
- 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 |
---|---|---|---|
CA491719T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA491719A true CA491719A (en) | 1953-03-31 |
Family
ID=35631464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA491719A Expired CA491719A (en) | Telephone system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA491719A (en) |
-
0
- CA CA491719A patent/CA491719A/en not_active Expired
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