CA449229A - Telephone or like signalling system - Google Patents
Telephone or like signalling systemInfo
- Publication number
- CA449229A CA449229A CA449229A CA449229DA CA449229A CA 449229 A CA449229 A CA 449229A CA 449229 A CA449229 A CA 449229A CA 449229D A CA449229D A CA 449229DA CA 449229 A CA449229 A CA 449229A
- Authority
- CA
- Canada
- Prior art keywords
- telephone
- signalling system
- signalling
- 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 |
---|---|---|---|
CA449229T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA449229A true CA449229A (en) | 1948-06-22 |
Family
ID=35566935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA449229A Expired CA449229A (en) | Telephone or like signalling system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA449229A (en) |
-
0
- CA CA449229A patent/CA449229A/en not_active Expired
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