NL74431C - - Google Patents
Info
- Publication number
- NL74431C NL74431C NL74431DA NL74431C NL 74431 C NL74431 C NL 74431C NL 74431D A NL74431D A NL 74431DA NL 74431 C NL74431 C NL 74431C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/34—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Relay Circuits (AREA)
- Direct Current Feeding And Distribution (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21405/48A GB646901A (en) | 1948-08-13 | 1948-08-13 | Improvements relating to circuit arrangements for the control of a direct current relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL74431C true NL74431C (instruction) |
Family
ID=10162378
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL74431D NL74431C (instruction) | 1948-08-13 | ||
| NL707013469A NL147787B (nl) | 1948-08-13 | Werkwijze voor het rechtstreeks, door gieten, vervaardigen van onderdelen van ovens en ovenonderdelen vervaardigd met deze werkwijze. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL707013469A NL147787B (nl) | 1948-08-13 | Werkwijze voor het rechtstreeks, door gieten, vervaardigen van onderdelen van ovens en ovenonderdelen vervaardigd met deze werkwijze. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2636930A (instruction) |
| GB (1) | GB646901A (instruction) |
| NL (2) | NL147787B (instruction) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2189846A (en) * | 1936-08-05 | 1940-02-13 | Jean Francois Augier Queyras | Automatic relay control system |
| US2279849A (en) * | 1940-05-16 | 1942-04-14 | Gen Electric | Control of electromagnetic devices |
| US2445450A (en) * | 1943-06-11 | 1948-07-20 | Westinghouse Electric Corp | Electrical induction apparatus |
| US2393060A (en) * | 1943-12-11 | 1946-01-15 | Westinghouse Electric Corp | Control system |
| US2515968A (en) * | 1947-05-07 | 1950-07-18 | Bendix Aviat Corp | Pulse length measurement |
| US2489017A (en) * | 1948-02-26 | 1949-11-22 | Bell Telephone Labor Inc | Control circuit for slow-releasing relays |
-
0
- NL NL74431D patent/NL74431C/xx active
- NL NL707013469A patent/NL147787B/xx unknown
-
1948
- 1948-08-13 GB GB21405/48A patent/GB646901A/en not_active Expired
-
1949
- 1949-07-29 US US107441A patent/US2636930A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL147787B (nl) | |
| US2636930A (en) | 1953-04-28 |
| GB646901A (en) | 1950-11-29 |