NL50898C - - Google Patents
Info
- Publication number
- NL50898C NL50898C NL50898DA NL50898C NL 50898 C NL50898 C NL 50898C NL 50898D A NL50898D A NL 50898DA NL 50898 C NL50898 C NL 50898C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202655X | 1937-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50898C true NL50898C (en:Method) |
Family
ID=5772561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL50898D NL50898C (en:Method) | 1937-02-13 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2160648A (en:Method) |
| BE (1) | BE426311A (en:Method) |
| CH (1) | CH202655A (en:Method) |
| FR (1) | FR833498A (en:Method) |
| GB (1) | GB494068A (en:Method) |
| NL (1) | NL50898C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2435299A (en) * | 1943-12-27 | 1948-02-03 | Edwin C Weiskopf | Microscope projecting and viewing apparatus |
| US2435300A (en) * | 1945-06-02 | 1948-02-03 | Edwin C Weiskopf | Projector for microscopes and other magnifying devices |
| US2477396A (en) * | 1946-08-27 | 1949-07-26 | Edwin C Weiskopf | Projecting microscope and viewing device |
| US2642521A (en) * | 1949-05-26 | 1953-06-16 | Ozalid Co Ltd | End connection for tubular lamps |
-
0
- NL NL50898D patent/NL50898C/xx active
- BE BE426311D patent/BE426311A/xx unknown
-
1938
- 1938-02-05 US US189006A patent/US2160648A/en not_active Expired - Lifetime
- 1938-02-10 GB GB4240/38A patent/GB494068A/en not_active Expired
- 1938-02-11 FR FR833498D patent/FR833498A/fr not_active Expired
- 1938-02-12 CH CH202655D patent/CH202655A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR833498A (fr) | 1938-10-21 |
| CH202655A (de) | 1939-01-31 |
| BE426311A (en:Method) | |
| US2160648A (en) | 1939-05-30 |
| GB494068A (en) | 1938-10-19 |