CA451431A - Systeme de signalisation telephonique - Google Patents
Systeme de signalisation telephoniqueInfo
- Publication number
- CA451431A CA451431A CA451431A CA451431DA CA451431A CA 451431 A CA451431 A CA 451431A CA 451431 A CA451431 A CA 451431A CA 451431D A CA451431D A CA 451431DA CA 451431 A CA451431 A CA 451431A
- 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
- 230000011664 signaling Effects 0.000 title 1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA451431T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA451431A true CA451431A (fr) | 1948-09-28 |
Family
ID=35569157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA451431A Expired CA451431A (fr) | Systeme de signalisation telephonique |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA451431A (fr) |
-
0
- CA CA451431A patent/CA451431A/fr not_active Expired
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