CA498639A - Systemes d'echanges telephoniques a longue distance - Google Patents
Systemes d'echanges telephoniques a longue distanceInfo
- Publication number
- CA498639A CA498639A CA498639A CA498639DA CA498639A CA 498639 A CA498639 A CA 498639A CA 498639 A CA498639 A CA 498639A CA 498639D A CA498639D A CA 498639DA CA 498639 A CA498639 A CA 498639A
- Authority
- CA
- Canada
- Prior art keywords
- long distance
- telephone exchange
- exchange systems
- distance telephone
- systems
- 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 |
|---|---|---|---|
| CA498639T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA498639A true CA498639A (fr) | 1953-12-22 |
Family
ID=35644080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA498639A Expired CA498639A (fr) | Systemes d'echanges telephoniques a longue distance |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA498639A (fr) |
-
0
- CA CA498639A patent/CA498639A/fr not_active Expired
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