NL255880A - - Google Patents
Info
- Publication number
- NL255880A NL255880A NL255880DA NL255880A NL 255880 A NL255880 A NL 255880A NL 255880D A NL255880D A NL 255880DA NL 255880 A NL255880 A NL 255880A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Emergency Alarm Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US840120A US3075187A (en) | 1959-09-15 | 1959-09-15 | Alarm apparatus for industrial instrumentation systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL255880A true NL255880A (fr) |
Family
ID=25281502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL255880D NL255880A (fr) | 1959-09-15 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3075187A (fr) |
| DE (1) | DE1153298B (fr) |
| GB (1) | GB897819A (fr) |
| NL (1) | NL255880A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283247A (en) * | 1962-12-31 | 1966-11-01 | Controls Co Of America | Voltage and temperature compensated tachometer circuit |
| GB1027885A (en) * | 1963-11-02 | 1966-04-27 | Ferranti Ltd | Improvements relating to apparatus for indicating the departure of a variable quantity from a datum value |
| US3304441A (en) * | 1964-07-31 | 1967-02-14 | Monsanto Co | Parameter variation monitor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1883613A (en) * | 1931-09-05 | 1932-10-18 | Union Switch & Signal Co | Voltage regulating apparatus |
| DE885721C (de) * | 1942-03-10 | 1953-08-06 | Atlas Werke Ag | Vorrichtung zum Schalten elektrischer Wechselspannungen |
| US2691727A (en) * | 1949-11-02 | 1954-10-12 | Int Standard Electric Corp | Impulse storing and distributing circuit |
| DE824365C (de) * | 1949-11-15 | 1951-12-10 | W H Joens & Co | Elektrische Schalteinrichtung |
| US2719289A (en) * | 1952-05-16 | 1955-09-27 | Bell Telephone Labor Inc | Electrical conversion system with high and low voltage alarm |
| US2665845A (en) * | 1952-10-08 | 1954-01-12 | Bell Telephone Labor Inc | Transistor trigger circuit for operating relays |
| US2779869A (en) * | 1953-07-20 | 1957-01-29 | Collins Radio Co | Amplitude distribution analyzer |
| US2883529A (en) * | 1954-03-15 | 1959-04-21 | Boeing Co | Voltage monitoring circuits |
| DE1041397B (de) * | 1957-02-28 | 1958-10-16 | Telefonbau | Schaltungsanordnung zur UEbertragung von Meldungen |
-
0
- NL NL255880D patent/NL255880A/xx unknown
-
1959
- 1959-09-15 US US840120A patent/US3075187A/en not_active Expired - Lifetime
-
1960
- 1960-08-17 GB GB28564/60A patent/GB897819A/en not_active Expired
- 1960-09-13 DE DEF32106A patent/DE1153298B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1153298B (de) | 1963-08-22 |
| GB897819A (en) | 1962-05-30 |
| US3075187A (en) | 1963-01-22 |