FR734074A - Improvements to electronic discharge devices - Google Patents
Improvements to electronic discharge devicesInfo
- Publication number
- FR734074A FR734074A FR734074DA FR734074A FR 734074 A FR734074 A FR 734074A FR 734074D A FR734074D A FR 734074DA FR 734074 A FR734074 A FR 734074A
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US514931A US1998884A (en) | 1931-02-11 | 1931-02-11 | Electric discharge device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR734074A true FR734074A (en) | 1932-10-15 |
Family
ID=24049276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR734074D Expired FR734074A (en) | 1931-02-11 | 1932-01-25 | Improvements to electronic discharge devices |
Country Status (5)
Country | Link |
---|---|
US (1) | US1998884A (en) |
DE (1) | DE668731C (en) |
FR (1) | FR734074A (en) |
GB (1) | GB392963A (en) |
NL (1) | NL36967C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2687471A (en) * | 1948-05-01 | 1954-08-24 | Western Union Telegraph Co | Concentrated arc discharge device |
US3394280A (en) * | 1966-08-01 | 1968-07-23 | Terry M. Trumble | Ultraviolet detector tube having photoemissive cathode and gas filling |
-
0
- NL NL36967D patent/NL36967C/xx active
-
1931
- 1931-02-11 US US514931A patent/US1998884A/en not_active Expired - Lifetime
- 1931-11-27 GB GB32920/31A patent/GB392963A/en not_active Expired
-
1932
- 1932-01-25 FR FR734074D patent/FR734074A/en not_active Expired
- 1932-02-12 DE DEI43726D patent/DE668731C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE668731C (en) | 1938-12-09 |
GB392963A (en) | 1933-05-29 |
NL36967C (en) | |
US1998884A (en) | 1935-04-23 |
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