CA278434A - Systeme de relais telephoniques - Google Patents
Systeme de relais telephoniquesInfo
- Publication number
- CA278434A CA278434A CA278434A CA278434DA CA278434A CA 278434 A CA278434 A CA 278434A CA 278434 A CA278434 A CA 278434A CA 278434D A CA278434D A CA 278434DA CA 278434 A CA278434 A CA 278434A
- Authority
- CA
- Canada
- Prior art keywords
- telephone system
- relay telephone
- relay
- 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 |
|---|---|---|---|
| CA278434T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA278434A true CA278434A (fr) | 1928-03-06 |
Family
ID=35211525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA278434A Expired CA278434A (fr) | Systeme de relais telephoniques |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA278434A (fr) |
-
0
- CA CA278434A patent/CA278434A/fr not_active Expired
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