BE421039A - - Google Patents
Info
- Publication number
- BE421039A BE421039A BE421039DA BE421039A BE 421039 A BE421039 A BE 421039A BE 421039D A BE421039D A BE 421039DA BE 421039 A BE421039 A BE 421039A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE484355X | 1936-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE421039A true BE421039A (cs) |
Family
ID=6543102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE421039D BE421039A (cs) | 1936-04-15 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2100886A (cs) |
| BE (1) | BE421039A (cs) |
| FR (1) | FR820587A (cs) |
| GB (1) | GB484355A (cs) |
-
0
- BE BE421039D patent/BE421039A/xx unknown
-
1937
- 1937-03-17 US US131464A patent/US2100886A/en not_active Expired - Lifetime
- 1937-04-13 GB GB10544/37A patent/GB484355A/en not_active Expired
- 1937-04-14 FR FR820587D patent/FR820587A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2100886A (en) | 1937-11-30 |
| GB484355A (en) | 1938-05-04 |
| FR820587A (fr) | 1937-11-15 |