BE424399A - - Google Patents
Info
- Publication number
- BE424399A BE424399A BE424399DA BE424399A BE 424399 A BE424399 A BE 424399A BE 424399D A BE424399D A BE 424399DA BE 424399 A BE424399 A BE 424399A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/76—Dynamic electron-multiplier tubes, e.g. Farnsworth multiplier tube, multipactor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
- E04B7/105—Grid-like structures
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US504630XA | 1936-11-09 | 1936-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE424399A true BE424399A (ja�@�@) | 1938-01-31 |
Family
ID=21965391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE424399D BE424399A (ja�@�@) | 1936-11-09 | 1937-11-02 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE424399A (ja�@�@) |
| FR (1) | FR828598A (ja�@�@) |
| GB (1) | GB504630A (ja�@�@) |
| NL (1) | NL57675C (ja�@�@) |
-
1937
- 1937-10-29 GB GB29591/37A patent/GB504630A/en not_active Expired
- 1937-11-02 FR FR828598D patent/FR828598A/fr not_active Expired
- 1937-11-02 BE BE424399D patent/BE424399A/xx unknown
-
1945
- 1945-08-15 NL NL94873A patent/NL57675C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| GB504630A (en) | 1939-04-28 |
| FR828598A (fr) | 1938-05-20 |
| NL57675C (ja�@�@) | 1946-06-15 |