DE813278C - Electric incandescent lamp with a bulb partially in the shape of an ellipsoid of revolution and partially in the shape of a sphere - Google Patents
Electric incandescent lamp with a bulb partially in the shape of an ellipsoid of revolution and partially in the shape of a sphereInfo
- Publication number
- DE813278C DE813278C DEP34976D DEP0034976D DE813278C DE 813278 C DE813278 C DE 813278C DE P34976 D DEP34976 D DE P34976D DE P0034976 D DEP0034976 D DE P0034976D DE 813278 C DE813278 C DE 813278C
- Authority
- DE
- Germany
- Prior art keywords
- shape
- partially
- incandescent lamp
- ellipsoid
- revolution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/40—Leading-in conductors
Description
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
8. 518. 51
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL270680X | 1948-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE813278C true DE813278C (en) | 1951-09-10 |
Family
ID=19781918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP34976D Expired DE813278C (en) | 1948-03-05 | 1949-02-24 | Electric incandescent lamp with a bulb partially in the shape of an ellipsoid of revolution and partially in the shape of a sphere |
Country Status (7)
Country | Link |
---|---|
US (1) | US2488751A (en) |
BE (1) | BE487695A (en) |
CH (1) | CH270680A (en) |
DE (1) | DE813278C (en) |
FR (1) | FR982309A (en) |
GB (1) | GB657243A (en) |
NL (1) | NL69920C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1236435B (en) * | 1961-04-18 | 1967-03-16 | Ass Elect Ind | Electric light bulb designed as a headlight |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2561033A (en) * | 1950-12-02 | 1951-07-17 | Odds Charles | Headlight |
US2692347A (en) * | 1951-03-28 | 1954-10-19 | Westinghouse Electric Corp | Metalized stems for low-pressure discharge tubes |
US2859368A (en) * | 1951-10-20 | 1958-11-04 | Sylvania Electric Prod | Heat lamp |
BE518131A (en) * | 1952-03-04 | |||
US2843778A (en) * | 1952-12-22 | 1958-07-15 | Gen Motors Corp | Light bulb |
US2818521A (en) * | 1954-01-14 | 1957-12-31 | Scarborough Associates Inc | Lamp |
US2766394A (en) * | 1955-02-18 | 1956-10-09 | Darsie George | Headlight |
NL127036C (en) * | 1959-06-02 | 1900-01-01 | ||
GB904469A (en) * | 1960-02-11 | 1962-08-29 | Thorn Electrical Ind Ltd | Improvements in and relating to projection lamps |
US4227113A (en) * | 1978-10-18 | 1980-10-07 | Duro-Test Corporation | Incandescent electric lamp with partial light transmitting coating |
US5677983A (en) * | 1995-01-11 | 1997-10-14 | Nauchno-Proizvodstvennaya Firma "Adonis" | Light beam heater with light source and reflector having two ellipsoidal sections and a truncated spherical surface there between |
-
0
- NL NL69920D patent/NL69920C/xx active
- BE BE487695D patent/BE487695A/xx unknown
-
1949
- 1949-02-23 US US77782A patent/US2488751A/en not_active Expired - Lifetime
- 1949-02-24 DE DEP34976D patent/DE813278C/en not_active Expired
- 1949-03-02 GB GB5713/49A patent/GB657243A/en not_active Expired
- 1949-03-03 CH CH270680D patent/CH270680A/en unknown
- 1949-03-03 FR FR982309D patent/FR982309A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1236435B (en) * | 1961-04-18 | 1967-03-16 | Ass Elect Ind | Electric light bulb designed as a headlight |
Also Published As
Publication number | Publication date |
---|---|
US2488751A (en) | 1949-11-22 |
FR982309A (en) | 1951-06-08 |
CH270680A (en) | 1950-09-15 |
BE487695A (en) | |
GB657243A (en) | 1951-09-12 |
NL69920C (en) |
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