NL53880C - - Google Patents
Info
- Publication number
- NL53880C NL53880C NL53880DA NL53880C NL 53880 C NL53880 C NL 53880C NL 53880D A NL53880D A NL 53880DA NL 53880 C NL53880 C NL 53880C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/58—Cooling arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH512803X | 1938-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL53880C true NL53880C (en) |
Family
ID=4517539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL53880D NL53880C (en) | 1938-01-28 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2188945A (en) |
| CH (1) | CH204631A (en) |
| DE (1) | DE741917C (en) |
| FR (1) | FR849076A (en) |
| GB (1) | GB512803A (en) |
| NL (1) | NL53880C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2534419A4 (en) * | 2010-02-08 | 2013-08-07 | Nilssen Ole K | Evaporation cooled lamp |
-
0
- NL NL53880D patent/NL53880C/xx active
-
1938
- 1938-01-28 CH CH204631D patent/CH204631A/en unknown
- 1938-03-16 GB GB8166/38A patent/GB512803A/en not_active Expired
-
1939
- 1939-01-14 US US250902A patent/US2188945A/en not_active Expired - Lifetime
- 1939-01-18 FR FR849076D patent/FR849076A/en not_active Expired
- 1939-01-21 DE DES135496D patent/DE741917C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE741917C (en) | 1943-11-19 |
| US2188945A (en) | 1940-02-06 |
| CH204631A (en) | 1939-05-15 |
| GB512803A (en) | 1939-09-26 |
| FR849076A (en) | 1939-11-14 |