BE517983A - - Google Patents
Info
- Publication number
- BE517983A BE517983A BE517983DA BE517983A BE 517983 A BE517983 A BE 517983A BE 517983D A BE517983D A BE 517983DA BE 517983 A BE517983 A BE 517983A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/30—Electromagnetic relays specially adapted for actuation by AC
- H01H51/32—Frequency relays; Mechanically-tuned relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Particle Accelerators (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE738852X | 1952-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE517983A true BE517983A (en:Method) | 1900-01-01 |
Family
ID=20319774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE517983D BE517983A (en:Method) | 1952-02-27 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2728003A (en:Method) |
| BE (1) | BE517983A (en:Method) |
| GB (1) | GB738852A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3517288A (en) * | 1968-09-03 | 1970-06-23 | Bulova Watch Co Inc | Transformer-coupled drive system for tuning-fork oscillator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1941273A (en) * | 1931-10-29 | 1933-12-26 | Gen Electric | Vacuum switch |
| FR745033A (en:Method) * | 1932-01-15 | 1933-05-01 | ||
| FR758319A (fr) * | 1932-10-12 | 1934-01-16 | Cem Comp Electro Mec | Perfectionnements aux appareils servant à couper les circuits électriques |
-
0
- BE BE517983D patent/BE517983A/xx unknown
-
1953
- 1953-02-12 GB GB398353A patent/GB738852A/en not_active Expired
- 1953-02-13 US US33684153 patent/US2728003A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2728003A (en) | 1955-12-20 |
| GB738852A (en) | 1955-10-19 |