JPS5431765B2 - - Google Patents
Info
- Publication number
- JPS5431765B2 JPS5431765B2 JP6551974A JP6551974A JPS5431765B2 JP S5431765 B2 JPS5431765 B2 JP S5431765B2 JP 6551974 A JP6551974 A JP 6551974A JP 6551974 A JP6551974 A JP 6551974A JP S5431765 B2 JPS5431765 B2 JP S5431765B2
- Authority
- JP
- Japan
- 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
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
- H04M1/312—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 pulses produced by electronic circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2739273A GB1411910A (en) | 1973-06-08 | 1973-06-08 | Push button telephone instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5034103A JPS5034103A (sv) | 1975-04-02 |
| JPS5431765B2 true JPS5431765B2 (sv) | 1979-10-09 |
Family
ID=10258849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6551974A Expired JPS5431765B2 (sv) | 1973-06-08 | 1974-06-08 |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5431765B2 (sv) |
| BE (1) | BE816008A (sv) |
| CA (1) | CA1001787A (sv) |
| DE (1) | DE2427584A1 (sv) |
| FR (1) | FR2232889B1 (sv) |
| GB (1) | GB1411910A (sv) |
| IT (1) | IT1011936B (sv) |
| SE (1) | SE7407345L (sv) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53109915A (en) * | 1977-01-29 | 1978-09-26 | Kureha Chem Ind Co Ltd | Preparation of anti-tumor polysaccharides |
| JPS53109922A (en) * | 1977-01-29 | 1978-09-26 | Kureha Chem Ind Co Ltd | Preparation of anti-tumor polysaccharides |
| JPS53109914A (en) * | 1977-01-29 | 1978-09-26 | Kureha Chem Ind Co Ltd | Preparation of anti-tumor polysaccharides |
| DE3037947C2 (de) * | 1980-10-08 | 1983-01-05 | Krone Gmbh, 1000 Berlin | Taste zum Wählen bei aufgelegtem Handapparat mittels einer Tastatur und zum Lauthören |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818558A (en) * | 1954-06-17 | 1957-12-31 | Bell Telephone Labor Inc | Key pulsing circuit |
| US3614331A (en) * | 1968-09-30 | 1971-10-19 | Mkh Inc | Keyboard pulse generator including a locking plate for use in telephone dialing |
-
1973
- 1973-06-08 GB GB2739273A patent/GB1411910A/en not_active Expired
-
1974
- 1974-06-05 SE SE7407345A patent/SE7407345L/ not_active Application Discontinuation
- 1974-06-06 BE BE145157A patent/BE816008A/xx unknown
- 1974-06-07 DE DE19742427584 patent/DE2427584A1/de active Pending
- 1974-06-07 CA CA201,891A patent/CA1001787A/en not_active Expired
- 1974-06-07 IT IT6880574A patent/IT1011936B/it active
- 1974-06-08 JP JP6551974A patent/JPS5431765B2/ja not_active Expired
- 1974-06-10 FR FR7419948A patent/FR2232889B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT1011936B (it) | 1977-02-10 |
| GB1411910A (en) | 1975-10-29 |
| DE2427584A1 (de) | 1975-01-02 |
| SE7407345L (sv) | 1974-12-09 |
| BE816008A (fr) | 1974-12-06 |
| FR2232889B1 (sv) | 1977-09-30 |
| JPS5034103A (sv) | 1975-04-02 |
| CA1001787A (en) | 1976-12-14 |
| FR2232889A1 (sv) | 1975-01-03 |