CA221432A - Telephone switchboard apparatus - Google Patents
Telephone switchboard apparatusInfo
- Publication number
- CA221432A CA221432A CA221432A CA221432DA CA221432A CA 221432 A CA221432 A CA 221432A CA 221432 A CA221432 A CA 221432A CA 221432D A CA221432D A CA 221432DA CA 221432 A CA221432 A CA 221432A
- Authority
- CA
- Canada
- Prior art keywords
- telephone switchboard
- switchboard apparatus
- telephone
- switchboard
- 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 |
---|---|---|---|
CA221432T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA221432A true CA221432A (en) | 1922-07-25 |
Family
ID=35117035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA221432A Expired CA221432A (en) | Telephone switchboard apparatus |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA221432A (en) |
-
0
- CA CA221432A patent/CA221432A/en not_active Expired
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