FR671657A - Cathode de <<wehnelt>> - Google Patents
Cathode de <<wehnelt>>Info
- Publication number
- FR671657A FR671657A FR671657DA FR671657A FR 671657 A FR671657 A FR 671657A FR 671657D A FR671657D A FR 671657DA FR 671657 A FR671657 A FR 671657A
- Authority
- FR
- France
- Prior art keywords
- wehnelt
- cathode
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
-
- 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Fats And Perfumes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL309578X | 1928-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR671657A true FR671657A (fr) | 1929-12-16 |
Family
ID=19783587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR671657D Expired FR671657A (fr) | 1928-04-13 | 1929-03-18 | Cathode de <<wehnelt>> |
Country Status (5)
Country | Link |
---|---|
US (1) | US1821359A (fr) |
BE (1) | BE359097A (fr) |
FR (1) | FR671657A (fr) |
GB (1) | GB309578A (fr) |
NL (1) | NL23762C (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE482916A (fr) * | 1947-06-05 | |||
US2552654A (en) * | 1948-08-30 | 1951-05-15 | Rca Corp | Heat-resistant cathode coatings |
US2663816A (en) * | 1949-09-28 | 1953-12-22 | Sylvania Electric Prod | Electric discharge lamp |
BE518639A (fr) * | 1952-03-24 | |||
NL269971A (fr) * | 1960-10-18 |
-
0
- NL NL23762D patent/NL23762C/xx active
- BE BE359097D patent/BE359097A/xx unknown
-
1929
- 1929-03-18 GB GB8714/29A patent/GB309578A/en not_active Expired
- 1929-03-18 FR FR671657D patent/FR671657A/fr not_active Expired
- 1929-04-04 US US352597A patent/US1821359A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB309578A (en) | 1930-03-06 |
BE359097A (fr) | |
NL23762C (fr) | |
US1821359A (en) | 1931-09-01 |
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