NL215077A - - Google Patents
Info
- Publication number
- NL215077A NL215077A NL215077DA NL215077A NL 215077 A NL215077 A NL 215077A NL 215077D A NL215077D A NL 215077DA NL 215077 A NL215077 A NL 215077A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
- H03K3/16—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using a transformer for feedback, e.g. blocking oscillator with saturable core
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2070900X | 1931-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL215077A true NL215077A (en) |
Family
ID=10897651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL215077D NL215077A (en) | 1931-07-02 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2070900A (en) |
| NL (1) | NL215077A (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416096A (en) * | 1941-11-18 | 1947-02-18 | Automatic Elect Lab | Selective electrical circuit |
| US2433845A (en) * | 1941-11-28 | 1948-01-06 | Harvey C Hayes | Sound operated relay system |
| FR960757A (en) * | 1944-01-07 | 1950-04-25 | ||
| US2503835A (en) * | 1944-09-01 | 1950-04-11 | Philco Corp | Signal maintaining circuit |
| US2533587A (en) * | 1944-09-11 | 1950-12-12 | Reconstruction Finance Corp | Controller |
| US3033146A (en) * | 1944-09-15 | 1962-05-08 | Bell Telephone Labor Inc | Control circuits |
| US2489202A (en) * | 1945-01-19 | 1949-11-22 | Hartford Nat Bank & Trust Comp | Calling and warning apparatus for communication systems |
| US2468574A (en) * | 1945-03-23 | 1949-04-26 | Teletype Corp | Selective control of printer motors at outlying telegraph stations |
| US2542998A (en) * | 1945-07-16 | 1951-02-27 | Int Standard Electric Corp | Matched potential control system |
| US2709773A (en) * | 1945-10-19 | 1955-05-31 | Ivan A Getting | Remote control system with position indicating means |
| US2501048A (en) * | 1946-10-11 | 1950-03-21 | Haller Raymond And Brown Inc | Announcing system |
| US2547023A (en) * | 1947-05-23 | 1951-04-03 | Motorola Inc | Selective calling system |
| US2512750A (en) * | 1947-07-07 | 1950-06-27 | John T Potter | Trigger circuit |
| US2546591A (en) * | 1947-11-12 | 1951-03-27 | Belmont Radio Corp | High-voltage power supply |
| US2679000A (en) * | 1949-01-13 | 1954-05-18 | Harold B Reynolds | Noise squelch system for frequency modulation receivers |
| US2680808A (en) * | 1950-07-20 | 1954-06-08 | Marchant Calculators Inc | Capacitor charging and discharging circuit |
| US2748269A (en) * | 1950-11-02 | 1956-05-29 | Ralph J Slutz | Regenerative shaping of electric pulses |
| US2710953A (en) * | 1952-07-29 | 1955-06-14 | Westinghouse Air Brake Co | High selectivity resonant circuits |
| US2784307A (en) * | 1952-08-25 | 1957-03-05 | Flite Tronics Inc | Marker beacon receiver |
| US2842721A (en) * | 1954-06-02 | 1958-07-08 | Tung Sol Electric Inc | Control circuit |
| US2899494A (en) * | 1954-06-02 | 1959-08-11 | System for the translation of intelligence |
-
0
- NL NL215077D patent/NL215077A/xx unknown
-
1932
- 1932-06-25 US US619222A patent/US2070900A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2070900A (en) | 1937-02-16 |