FR1012204A - Improvements in the manufacture of vacuum tubes - Google Patents
Improvements in the manufacture of vacuum tubesInfo
- Publication number
- FR1012204A FR1012204A FR1012204DA FR1012204A FR 1012204 A FR1012204 A FR 1012204A FR 1012204D A FR1012204D A FR 1012204DA FR 1012204 A FR1012204 A FR 1012204A
- Authority
- FR
- France
- Prior art keywords
- manufacture
- vacuum tubes
- tubes
- vacuum
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1012204T | 1949-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1012204A true FR1012204A (en) | 1952-07-07 |
Family
ID=9570636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1012204D Expired FR1012204A (en) | 1949-07-04 | 1949-07-04 | Improvements in the manufacture of vacuum tubes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1012204A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132459A (en) * | 1977-03-28 | 1979-01-02 | Zenith Radio Corporation | Method for cathode coating erosion suppression for a television tube |
-
1949
- 1949-07-04 FR FR1012204D patent/FR1012204A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132459A (en) * | 1977-03-28 | 1979-01-02 | Zenith Radio Corporation | Method for cathode coating erosion suppression for a television tube |
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