BE427837A - - Google Patents
Info
- Publication number
- BE427837A BE427837A BE427837DA BE427837A BE 427837 A BE427837 A BE 427837A BE 427837D A BE427837D A BE 427837DA BE 427837 A BE427837 A BE 427837A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
- H01J43/08—Cathode arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electron Tubes For Measurement (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF4463D DE889657C (de) | 1937-05-04 | 1937-05-04 | Sekundaerelektronenverstaerker |
| DEF4678D DE901569C (de) | 1937-05-04 | 1938-02-19 | Photozelle mit Sekundaerelektronenverstaerker |
| GB13174/38A GB514335A (en) | 1937-05-04 | 1938-05-03 | Improvements in or relating to electron multipliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE427837A true BE427837A (cg-RX-API-DMAC7.html) | 1938-05-31 |
Family
ID=32073732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE427837D BE427837A (cg-RX-API-DMAC7.html) | 1937-05-04 | 1938-04-30 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2216267A (cg-RX-API-DMAC7.html) |
| BE (1) | BE427837A (cg-RX-API-DMAC7.html) |
| DE (3) | DE889657C (cg-RX-API-DMAC7.html) |
| FR (1) | FR837484A (cg-RX-API-DMAC7.html) |
| GB (1) | GB514335A (cg-RX-API-DMAC7.html) |
| NL (1) | NL59576C (cg-RX-API-DMAC7.html) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750071C (de) * | 1939-06-21 | 1944-12-12 | Verfahren zur Herstellung von Elektronenvervielfachern mit Elektroden verschiedenen Sekundaeremissionsgrades | |
| GB745811A (en) * | 1951-03-27 | 1956-03-07 | Emi Ltd | Improvements relating to electron multipliers |
| DE1031902B (de) * | 1953-11-09 | 1958-06-12 | Siemens Ag Albis | Bildwandlerroehre |
| US2983845A (en) * | 1959-05-07 | 1961-05-09 | Bendix Corp | Electron multiplier spurious noise baffle |
| US4006376A (en) * | 1975-02-28 | 1977-02-01 | Rca Corporation | Phototube having improved electron collection efficiency |
-
1937
- 1937-05-04 DE DEF4463D patent/DE889657C/de not_active Expired
-
1938
- 1938-02-19 DE DEF4678D patent/DE901569C/de not_active Expired
- 1938-04-28 NL NL87583A patent/NL59576C/xx active
- 1938-04-30 BE BE427837D patent/BE427837A/xx unknown
- 1938-05-03 GB GB13174/38A patent/GB514335A/en not_active Expired
- 1938-05-03 US US205842A patent/US2216267A/en not_active Expired - Lifetime
- 1938-05-03 FR FR837484D patent/FR837484A/fr not_active Expired
-
1939
- 1939-10-29 DE DEF4516D patent/DE907097C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR837484A (fr) | 1939-02-10 |
| US2216267A (en) | 1940-10-01 |
| DE907097C (de) | 1954-03-22 |
| GB514335A (en) | 1939-11-06 |
| DE901569C (de) | 1954-01-11 |
| DE889657C (de) | 1953-09-14 |
| NL59576C (cg-RX-API-DMAC7.html) | 1947-07-15 |