BE408568A - - Google Patents
Info
- Publication number
- BE408568A BE408568A BE408568DA BE408568A BE 408568 A BE408568 A BE 408568A BE 408568D A BE408568D A BE 408568DA BE 408568 A BE408568 A BE 408568A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
- H01K1/325—Reflecting coating
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1998187X | 1933-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE408568A true BE408568A (de) | 1935-04-30 |
Family
ID=9682891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE408568D BE408568A (de) | 1933-12-01 | 1935-03-23 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1998187A (de) |
| BE (1) | BE408568A (de) |
| DE (1) | DE642480C (de) |
| FR (1) | FR784648A (de) |
| GB (1) | GB440455A (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441823A (en) * | 1943-02-01 | 1948-05-18 | Westinghouse Electric Corp | Reflector lamp and optical system |
| US2441824A (en) * | 1943-10-16 | 1948-05-18 | Westinghouse Electric Corp | Reflector lamp |
| US2501140A (en) * | 1947-10-17 | 1950-03-21 | Pique Baudilio Jesus | Electric-light projecting reflector |
| BE518131A (de) * | 1952-03-04 | |||
| US2843778A (en) * | 1952-12-22 | 1958-07-15 | Gen Motors Corp | Light bulb |
| US2766394A (en) * | 1955-02-18 | 1956-10-09 | Darsie George | Headlight |
| DE2529416C2 (de) * | 1975-07-02 | 1987-04-16 | Fabriques Réunies de Lampes Electriques, Issy-les-Moulineaux, Hauts-de-Seine | Elektrische Glühlampe mit einer kappenförmigen Verspiegelung |
-
1933
- 1933-12-01 FR FR784648D patent/FR784648A/fr not_active Expired
-
1934
- 1934-08-19 DE DEB166563D patent/DE642480C/de not_active Expired
- 1934-11-30 GB GB34392/34A patent/GB440455A/en not_active Expired
- 1934-12-11 US US757025A patent/US1998187A/en not_active Expired - Lifetime
-
1935
- 1935-03-23 BE BE408568D patent/BE408568A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US1998187A (en) | 1935-04-16 |
| FR784648A (fr) | 1935-07-22 |
| GB440455A (en) | 1935-12-31 |
| DE642480C (de) | 1937-03-05 |