ZA732501B - Improvements in or relating to telecommunications dial switches - Google Patents
Improvements in or relating to telecommunications dial switchesInfo
- Publication number
- ZA732501B ZA732501B ZA732501A ZA732501A ZA732501B ZA 732501 B ZA732501 B ZA 732501B ZA 732501 A ZA732501 A ZA 732501A ZA 732501 A ZA732501 A ZA 732501A ZA 732501 B ZA732501 B ZA 732501B
- Authority
- ZA
- South Africa
- Prior art keywords
- telecommunications
- relating
- dial switches
- dial
- switches
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Braking Arrangements (AREA)
- Mechanical Control Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2225208A DE2225208B2 (en) | 1972-05-24 | 1972-05-24 | Number switch with directional lock acting on the brake regulator |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA732501B true ZA732501B (en) | 1974-02-27 |
Family
ID=5845736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA732501A ZA732501B (en) | 1972-05-24 | 1973-04-11 | Improvements in or relating to telecommunications dial switches |
Country Status (11)
Country | Link |
---|---|
AR (1) | AR193951A1 (en) |
BE (1) | BE799981A (en) |
BR (1) | BR7303724D0 (en) |
CH (1) | CH548141A (en) |
DE (1) | DE2225208B2 (en) |
FR (1) | FR2185904A1 (en) |
IT (1) | IT987784B (en) |
LU (1) | LU67640A1 (en) |
NL (1) | NL7305730A (en) |
SE (1) | SE379470B (en) |
ZA (1) | ZA732501B (en) |
-
1972
- 1972-05-24 DE DE2225208A patent/DE2225208B2/en active Granted
-
1973
- 1973-03-16 CH CH384273A patent/CH548141A/en not_active IP Right Cessation
- 1973-03-29 AR AR247318A patent/AR193951A1/en active
- 1973-04-11 ZA ZA732501A patent/ZA732501B/en unknown
- 1973-04-24 NL NL7305730A patent/NL7305730A/xx unknown
- 1973-05-21 FR FR7318333A patent/FR2185904A1/fr active Pending
- 1973-05-21 BR BR3724/73A patent/BR7303724D0/en unknown
- 1973-05-22 IT IT24378/73A patent/IT987784B/en active
- 1973-05-22 LU LU67640A patent/LU67640A1/xx unknown
- 1973-05-24 BE BE131478A patent/BE799981A/en unknown
- 1973-05-24 SE SE7307343A patent/SE379470B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
LU67640A1 (en) | 1973-07-26 |
CH548141A (en) | 1974-04-11 |
NL7305730A (en) | 1973-11-27 |
DE2225208C3 (en) | 1974-10-03 |
SE379470B (en) | 1975-10-06 |
BR7303724D0 (en) | 1974-07-11 |
BE799981A (en) | 1973-11-26 |
AR193951A1 (en) | 1973-05-31 |
DE2225208B2 (en) | 1974-03-07 |
DE2225208A1 (en) | 1973-12-06 |
IT987784B (en) | 1975-03-20 |
FR2185904A1 (en) | 1974-01-04 |
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