FR40029E - Improvements to electronic discharge tubes - Google Patents
Improvements to electronic discharge tubesInfo
- Publication number
- FR40029E FR40029E FR40029DA FR40029E FR 40029 E FR40029 E FR 40029E FR 40029D A FR40029D A FR 40029DA FR 40029 E FR40029 E FR 40029E
- Authority
- FR
- France
- Prior art keywords
- discharge tubes
- electronic discharge
- electronic
- tubes
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US373632A US1794283A (en) | 1929-06-25 | 1929-06-25 | Rectifying apparatus |
US483949A US1951150A (en) | 1929-06-25 | 1930-09-23 | Gas conduction device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR40029E true FR40029E (en) | 1932-03-25 |
Family
ID=27006257
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR697838D Expired FR697838A (en) | 1929-06-25 | 1930-06-24 | Improvements to electronic discharge tubes |
FR40029D Expired FR40029E (en) | 1929-06-25 | 1931-03-25 | Improvements to electronic discharge tubes |
FR40808D Expired FR40808E (en) | 1929-06-25 | 1931-09-23 | Improvements to electronic discharge tubes |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR697838D Expired FR697838A (en) | 1929-06-25 | 1930-06-24 | Improvements to electronic discharge tubes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR40808D Expired FR40808E (en) | 1929-06-25 | 1931-09-23 | Improvements to electronic discharge tubes |
Country Status (4)
Country | Link |
---|---|
US (1) | US1951150A (en) |
BE (1) | BE371407A (en) |
FR (3) | FR697838A (en) |
GB (2) | GB354452A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE764007C (en) * | 1937-10-09 | 1954-05-10 | Siemens Schuckertwerke A G | Electric gas or vapor discharge vessel controlled in its work performance |
US2419902A (en) * | 1944-03-10 | 1947-04-29 | Sylvania Electric Prod | Fluorescent electric discharge lamp |
US2478119A (en) * | 1945-04-20 | 1949-08-02 | Gen Motors Corp | Gaseous discharge tube |
-
0
- BE BE371407D patent/BE371407A/xx unknown
-
1930
- 1930-06-04 GB GB17288/30A patent/GB354452A/en not_active Expired
- 1930-06-24 FR FR697838D patent/FR697838A/en not_active Expired
- 1930-09-23 US US483949A patent/US1951150A/en not_active Expired - Lifetime
-
1931
- 1931-03-25 FR FR40029D patent/FR40029E/en not_active Expired
- 1931-09-22 GB GB26481/31A patent/GB389157A/en not_active Expired
- 1931-09-23 FR FR40808D patent/FR40808E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR40808E (en) | 1932-08-23 |
GB354452A (en) | 1931-08-13 |
US1951150A (en) | 1934-03-13 |
GB389157A (en) | 1933-03-16 |
BE371407A (en) | |
FR697838A (en) | 1931-01-22 |
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