CA403113A - Telephone and telegraph exchange system - Google Patents
Telephone and telegraph exchange systemInfo
- Publication number
- CA403113A CA403113A CA403113A CA403113DA CA403113A CA 403113 A CA403113 A CA 403113A CA 403113 A CA403113 A CA 403113A CA 403113D A CA403113D A CA 403113DA CA 403113 A CA403113 A CA 403113A
- Authority
- CA
- Canada
- Prior art keywords
- telephone
- exchange system
- telegraph exchange
- telegraph
- exchange
- 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 |
---|---|---|---|
CA403113T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA403113A true CA403113A (en) | 1942-02-24 |
Family
ID=35413560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA403113A Expired CA403113A (en) | Telephone and telegraph exchange system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA403113A (en) |
-
0
- CA CA403113A patent/CA403113A/en not_active Expired
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