BE425306A - - Google Patents
Info
- Publication number
- BE425306A BE425306A BE425306DA BE425306A BE 425306 A BE425306 A BE 425306A BE 425306D A BE425306D A BE 425306DA BE 425306 A BE425306 A BE 425306A
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL205355X | 1936-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE425306A true BE425306A (en:Method) |
Family
ID=19778522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE425306D BE425306A (en:Method) | 1936-12-18 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2144521A (en:Method) |
| BE (1) | BE425306A (en:Method) |
| CH (1) | CH205355A (en:Method) |
| DE (1) | DE718520C (en:Method) |
| FR (1) | FR830957A (en:Method) |
| GB (1) | GB513249A (en:Method) |
| NL (1) | NL51560C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441823A (en) * | 1943-02-01 | 1948-05-18 | Westinghouse Electric Corp | Reflector lamp and optical system |
| US2622222A (en) * | 1951-04-27 | 1952-12-16 | Westinghouse Electric Corp | Infrared heating and cooking lamp |
| US4379249A (en) * | 1980-08-20 | 1983-04-05 | Duro-Test, Corporation | Incandescent lamp with ellipsoidal envelope and infrared reflector |
-
0
- NL NL51560D patent/NL51560C/xx active
- BE BE425306D patent/BE425306A/xx unknown
-
1937
- 1937-12-06 US US178382A patent/US2144521A/en not_active Expired - Lifetime
- 1937-12-16 GB GB34907/37A patent/GB513249A/en not_active Expired
- 1937-12-18 FR FR830957D patent/FR830957A/fr not_active Expired
- 1937-12-18 DE DEN41447D patent/DE718520C/de not_active Expired
- 1937-12-18 CH CH205355D patent/CH205355A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL51560C (en:Method) | |
| GB513249A (en) | 1939-10-09 |
| FR830957A (fr) | 1938-08-16 |
| DE718520C (de) | 1942-03-13 |
| CH205355A (de) | 1939-06-15 |
| US2144521A (en) | 1939-01-17 |