FR541838A - Improvements to electronic discharge devices - Google Patents
Improvements to electronic discharge devicesInfo
- Publication number
- FR541838A FR541838A FR541838DA FR541838A FR 541838 A FR541838 A FR 541838A FR 541838D A FR541838D A FR 541838DA FR 541838 A FR541838 A FR 541838A
- Authority
- FR
- France
- Prior art keywords
- discharge devices
- electronic discharge
- electronic
- devices
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/64—Cathode glow lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US541838XA | 1920-10-01 | 1920-10-01 | |
GB4617/21A GB178616A (en) | 1920-10-01 | 1921-02-09 | Improvements in and relating to electric lamp discharge devices, or the like |
NL20734A NL10239C (en) | 1920-10-01 | 1921-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR541838A true FR541838A (en) | 1922-08-02 |
Family
ID=9780542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR541838D Expired FR541838A (en) | 1920-10-01 | 1921-09-30 | Improvements to electronic discharge devices |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR541838A (en) |
GB (1) | GB178616A (en) |
NL (1) | NL10239C (en) |
-
1921
- 1921-02-09 GB GB4617/21A patent/GB178616A/en not_active Expired
- 1921-09-30 FR FR541838D patent/FR541838A/en not_active Expired
- 1921-11-05 NL NL20734A patent/NL10239C/xx active
Also Published As
Publication number | Publication date |
---|---|
GB178616A (en) | 1922-04-27 |
NL10239C (en) | 1924-01-15 |
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