BE379172A - - Google Patents
Info
- Publication number
- BE379172A BE379172A BE379172DA BE379172A BE 379172 A BE379172 A BE 379172A BE 379172D A BE379172D A BE 379172DA BE 379172 A BE379172 A BE 379172A
- Authority
- BE
- Belgium
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
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
- H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE574067T | 1930-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE379172A true BE379172A (en:Method) |
Family
ID=34584639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE379172D BE379172A (en:Method) | 1930-08-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1861633A (en:Method) |
| BE (1) | BE379172A (en:Method) |
| DE (1) | DE574067C (en:Method) |
| FR (1) | FR715552A (en:Method) |
| GB (1) | GB369509A (en:Method) |
| NL (1) | NL31279C (en:Method) |
-
0
- NL NL31279D patent/NL31279C/xx active
- BE BE379172D patent/BE379172A/xx unknown
-
1930
- 1930-08-16 DE DE1930574067D patent/DE574067C/de not_active Expired
-
1931
- 1931-04-16 FR FR715552D patent/FR715552A/fr not_active Expired
- 1931-07-21 US US552260A patent/US1861633A/en not_active Expired - Lifetime
- 1931-08-11 GB GB22702/31A patent/GB369509A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL31279C (en:Method) | |
| FR715552A (fr) | 1931-12-05 |
| DE574067C (de) | 1933-04-08 |
| US1861633A (en) | 1932-06-07 |
| GB369509A (en) | 1932-03-24 |