NL78173C - - Google Patents
Info
- Publication number
- NL78173C NL78173C NL78173DA NL78173C NL 78173 C NL78173 C NL 78173C NL 78173D A NL78173D A NL 78173DA NL 78173 C NL78173 C NL 78173C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
- H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR850011X | 1950-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL78173C true NL78173C (xx) |
Family
ID=9315025
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL78173D NL78173C (xx) | 1950-05-17 | ||
| NL686802671A NL155224B (nl) | 1950-05-17 | Profiellijst voor voertuigcarosserieen. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL686802671A NL155224B (nl) | 1950-05-17 | Profiellijst voor voertuigcarosserieen. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2605333A (xx) |
| BE (1) | BE503198A (xx) |
| DE (1) | DE850011C (xx) |
| FR (1) | FR1018150A (xx) |
| GB (1) | GB679357A (xx) |
| NL (2) | NL155224B (xx) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE510734A (xx) * | 1951-04-19 | |||
| US2794853A (en) * | 1951-05-31 | 1957-06-04 | Western Union Telegraph Co | Submarine cable amplifier and wave shaper |
| US2724107A (en) * | 1952-06-13 | 1955-11-15 | Ultraschall Geratebau Dr Born | Device for transfer of supersonic vibrations |
| BE523047A (xx) * | 1952-09-26 | |||
| NL82192C (xx) * | 1952-10-31 | |||
| US2737595A (en) * | 1952-11-08 | 1956-03-06 | Serge A Scherbatskoy | Cross feed indicator for simultaneous radioactivity well logging system |
| GB739954A (en) * | 1953-06-26 | 1955-11-02 | Telefunken Gmbh | Improvements in or relating to distributed line amplifiers |
| DE1003810B (de) * | 1953-09-21 | 1957-03-07 | Siemens Ag | Verfahren und Einrichtung fuer die Umschaltung von Betriebs- auf Ersatzroehren und umgekehrt sowie fuer die Ein- bzw. Abschaltung oder das Einsetzen bzw. die Entnahme einer von zwei parallel geschalteten Roehren, vorzugsweise fuer Geraete der elektrischen Nachrichtenuebertragungs- und Messtechnik |
| US2922114A (en) * | 1954-01-11 | 1960-01-19 | Schlumberger Well Surv Corp | Signal amplifying system |
| US2807678A (en) * | 1954-06-30 | 1957-09-24 | Sirelec Soc | Amplifier for direct currents or for very low frequency currents |
| US2932794A (en) * | 1954-07-29 | 1960-04-12 | Motorola Inc | Subcarrier separation system |
| CH340257A (fr) * | 1955-09-20 | 1959-08-15 | Sperry Rand Corp | Dispositif comprenant au moins un amplificateur destiné à amplifier une tension alternative |
| US2824296A (en) * | 1955-09-20 | 1958-02-18 | Sperry Rand Corp | Redundant fail-proof amplifier and alarm |
| DE1088101B (de) * | 1956-05-23 | 1960-09-01 | Western Electric Co | Signaluebertragungsanordnung mit einer Anzahl von parallel geschalteten Signaluebertragungskanaelen |
| US3053934A (en) * | 1959-04-21 | 1962-09-11 | Erie Resistor Corp | Amplifier system for stereo sound |
| US3072858A (en) * | 1959-07-22 | 1963-01-08 | Sperry Rand Corp | Redundant amplifier failure alarm |
| NL270662A (xx) * | 1960-10-26 | |||
| JPS5012859B1 (xx) * | 1969-12-16 | 1975-05-15 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2199189A (en) * | 1937-03-31 | 1940-04-30 | Rca Corp | Beat frequency indicator |
-
0
- NL NL78173D patent/NL78173C/xx active
- NL NL686802671A patent/NL155224B/xx unknown
- BE BE503198D patent/BE503198A/xx unknown
-
1950
- 1950-05-17 FR FR1018150D patent/FR1018150A/fr not_active Expired
-
1951
- 1951-05-10 US US225479A patent/US2605333A/en not_active Expired - Lifetime
- 1951-05-13 DE DEJ4147A patent/DE850011C/de not_active Expired
- 1951-05-17 GB GB11588/51A patent/GB679357A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE503198A (xx) | |
| FR1018150A (fr) | 1952-12-26 |
| GB679357A (en) | 1952-09-17 |
| NL155224B (nl) | |
| US2605333A (en) | 1952-07-29 |
| DE850011C (de) | 1952-09-22 |