CA309969A - Systeme de signaux de telephone - Google Patents
Systeme de signaux de telephoneInfo
- Publication number
- CA309969A CA309969A CA309969A CA309969DA CA309969A CA 309969 A CA309969 A CA 309969A CA 309969 A CA309969 A CA 309969A CA 309969D A CA309969D A CA 309969DA CA 309969 A CA309969 A CA 309969A
- Authority
- CA
- Canada
- Prior art keywords
- signalling system
- telephone signalling
- telephone
- 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
- 230000011664 signaling Effects 0.000 title 1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309969T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA309969A true CA309969A (fr) | 1931-03-31 |
Family
ID=35269293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA309969A Expired CA309969A (fr) | Systeme de signaux de telephone |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA309969A (fr) |
-
0
- CA CA309969A patent/CA309969A/fr not_active Expired
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