BE445505A - - Google Patents
Info
- Publication number
- BE445505A BE445505A BE445505DA BE445505A BE 445505 A BE445505 A BE 445505A BE 445505D A BE445505D A BE 445505DA BE 445505 A BE445505 A BE 445505A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/04—Cases; Covers
-
- 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
- H03F1/542—Replacing by standby devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US203604A US2153528A (en) | 1938-04-22 | 1938-04-22 | Broad band transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE445505A true BE445505A (id) |
Family
ID=22754627
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE445505D BE445505A (id) | 1938-04-22 | ||
| BE433887D BE433887A (id) | 1938-04-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE433887D BE433887A (id) | 1938-04-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2153528A (id) |
| BE (2) | BE433887A (id) |
| CH (1) | CH227863A (id) |
| FR (1) | FR853067A (id) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3163809A (en) * | 1961-01-10 | 1964-12-29 | Ling Temco Vought Inc | Random noise system for vibration testing |
-
0
- BE BE445505D patent/BE445505A/xx unknown
- BE BE433887D patent/BE433887A/xx unknown
-
1938
- 1938-04-22 US US203604A patent/US2153528A/en not_active Expired - Lifetime
-
1939
- 1939-04-13 FR FR853067D patent/FR853067A/fr not_active Expired
-
1942
- 1942-05-06 CH CH227863D patent/CH227863A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR853067A (fr) | 1940-03-09 |
| CH227863A (de) | 1943-07-15 |
| US2153528A (en) | 1939-04-04 |
| BE433887A (id) |