BE420072A - - Google Patents
Info
- Publication number
- BE420072A BE420072A BE420072DA BE420072A BE 420072 A BE420072 A BE 420072A BE 420072D A BE420072D A BE 420072DA BE 420072 A BE420072 A BE 420072A
- 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
- H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL465337X | 1936-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE420072A true BE420072A (en:Method) |
Family
ID=19786424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE420072D BE420072A (en:Method) | 1936-02-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2152995A (en:Method) |
| BE (1) | BE420072A (en:Method) |
| DE (1) | DE665480C (en:Method) |
| FR (1) | FR818047A (en:Method) |
| GB (1) | GB465337A (en:Method) |
| NL (1) | NL50468C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2615146A (en) * | 1948-02-11 | 1952-10-21 | Cooper Hewitt Electric Co | Thermostatic switch |
| NL7902574A (nl) * | 1979-04-03 | 1980-10-07 | Philips Nv | Hogedrukontladingslamp. |
-
0
- BE BE420072D patent/BE420072A/xx unknown
- NL NL50468D patent/NL50468C/xx active
-
1936
- 1936-03-05 DE DEN39212D patent/DE665480C/de not_active Expired
-
1937
- 1937-02-09 US US124854A patent/US2152995A/en not_active Expired - Lifetime
- 1937-02-16 GB GB4681/37A patent/GB465337A/en not_active Expired
- 1937-02-18 FR FR818047D patent/FR818047A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR818047A (fr) | 1937-09-16 |
| US2152995A (en) | 1939-04-04 |
| GB465337A (en) | 1937-05-05 |
| DE665480C (de) | 1938-09-28 |
| NL50468C (en:Method) |