NL69920C - - Google Patents
Info
- Publication number
- NL69920C NL69920C NL69920DA NL69920C NL 69920 C NL69920 C NL 69920C NL 69920D A NL69920D A NL 69920DA NL 69920 C NL69920 C NL 69920C
- Authority
- NL
- Netherlands
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL270680X | 1948-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL69920C true NL69920C (el) |
Family
ID=19781918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL69920D NL69920C (el) | 1948-03-05 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2488751A (el) |
| BE (1) | BE487695A (el) |
| CH (1) | CH270680A (el) |
| DE (1) | DE813278C (el) |
| FR (1) | FR982309A (el) |
| GB (1) | GB657243A (el) |
| NL (1) | NL69920C (el) |
Families Citing this family (12)
| 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 (el) * | 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 |
| NL252232A (el) * | 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 |
| NL276950A (el) * | 1961-04-18 | |||
| 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/de not_active Expired
- 1949-03-02 GB GB5713/49A patent/GB657243A/en not_active Expired
- 1949-03-03 FR FR982309D patent/FR982309A/fr not_active Expired
- 1949-03-03 CH CH270680D patent/CH270680A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE813278C (de) | 1951-09-10 |
| BE487695A (el) | |
| GB657243A (en) | 1951-09-12 |
| FR982309A (fr) | 1951-06-08 |
| CH270680A (de) | 1950-09-15 |
| US2488751A (en) | 1949-11-22 |