NL134703C - - Google Patents
Info
- Publication number
- NL134703C NL134703C NL134703DA NL134703C NL 134703 C NL134703 C NL 134703C NL 134703D A NL134703D A NL 134703DA NL 134703 C NL134703 C NL 134703C
- Authority
- NL
- Netherlands
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
-
- 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
- H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Push-Button Switches (AREA)
- Telephonic Communication Services (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6506342A NL6506342A (nl) | 1965-05-19 | 1965-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL134703C true NL134703C (nl) |
Family
ID=19793183
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL134703D NL134703C (nl) | 1965-05-19 | ||
| NL6506342A NL6506342A (nl) | 1965-05-19 | 1965-05-19 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6506342A NL6506342A (nl) | 1965-05-19 | 1965-05-19 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3483332A (nl) |
| JP (1) | JPS4326130B1 (nl) |
| AT (1) | AT254952B (nl) |
| BE (1) | BE681182A (nl) |
| CH (1) | CH439404A (nl) |
| DE (1) | DE1256713B (nl) |
| DK (1) | DK112390B (nl) |
| FR (1) | FR1484006A (nl) |
| GB (1) | GB1095616A (nl) |
| NL (2) | NL6506342A (nl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8614199D0 (en) * | 1986-06-11 | 1986-07-16 | Salplex Ltd | Information handling & control systems |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL69825C (nl) * | 1944-04-21 | |||
| US2428016A (en) * | 1944-04-21 | 1947-09-30 | Int Standard Electric Corp | Key-sender for telecommunication systems |
| US2438496A (en) * | 1944-05-01 | 1948-03-30 | Int Standard Electric Corp | Telephone system employing key type call transmitter |
| US2596025A (en) * | 1948-01-03 | 1952-05-06 | Ericsson Telefon Ab L M | Signaling over telephone lines by means of a nonlinear resistance |
| DE1185665B (de) * | 1963-09-14 | 1965-01-21 | Standard Elektrik Lorenz Ag | Tastengesteuerter Mehrfrequenz-Tongenerator |
-
0
- NL NL134703D patent/NL134703C/xx active
-
1965
- 1965-05-19 NL NL6506342A patent/NL6506342A/xx unknown
-
1966
- 1966-05-09 US US548582A patent/US3483332A/en not_active Expired - Lifetime
- 1966-05-14 DE DEN28531A patent/DE1256713B/de active Pending
- 1966-05-16 GB GB21555/66A patent/GB1095616A/en not_active Expired
- 1966-05-16 AT AT460466A patent/AT254952B/de active
- 1966-05-16 JP JP3072166A patent/JPS4326130B1/ja active Pending
- 1966-05-16 CH CH705866A patent/CH439404A/de unknown
- 1966-05-16 DK DK250566AA patent/DK112390B/da unknown
- 1966-05-17 BE BE681182A patent/BE681182A/xx unknown
- 1966-05-18 FR FR62169A patent/FR1484006A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE681182A (nl) | 1966-11-17 |
| DK112390B (da) | 1968-12-09 |
| DE1256713B (de) | 1967-12-21 |
| JPS4326130B1 (nl) | 1968-11-11 |
| CH439404A (de) | 1967-07-15 |
| GB1095616A (en) | 1967-12-20 |
| NL6506342A (nl) | 1966-11-21 |
| AT254952B (de) | 1967-06-12 |
| FR1484006A (fr) | 1967-06-09 |
| US3483332A (en) | 1969-12-09 |