NL100722C - - Google Patents
Info
- Publication number
- NL100722C NL100722C NL100722DA NL100722C NL 100722 C NL100722 C NL 100722C NL 100722D A NL100722D A NL 100722DA NL 100722 C NL100722 C NL 100722C
- Authority
- NL
- Netherlands
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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US618072A US2869017A (en) | 1956-10-24 | 1956-10-24 | Thermionic dispenser cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL100722C true NL100722C (en) |
Family
ID=24476212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL100722D NL100722C (en) | 1956-10-24 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2869017A (en) |
| BE (1) | BE561832A (en) |
| CH (1) | CH355529A (en) |
| DE (1) | DE1042136B (en) |
| FR (1) | FR1185028A (en) |
| GB (1) | GB857090A (en) |
| NL (1) | NL100722C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE564257A (en) * | 1957-01-26 | |||
| JPS58100329A (en) * | 1981-12-11 | 1983-06-15 | Toshiba Corp | Cathode structure for electron tube |
| KR930007461B1 (en) * | 1991-04-23 | 1993-08-11 | 주식회사 금성사 | Method of making a dispenser type cathode |
| US5114742A (en) * | 1991-07-17 | 1992-05-19 | The United States Of America As Represented By The Secretary Of The Army | Preparing a scandate cathode by impregnating a porous tungsten billet with Ba3 Al2 O6, coating the top surface with a mixture of Sc6 WO12, Sc2 (WO4)3, and W in a 1:3:2 mole ratio, and heating in a vacuum |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE498869A (en) * | 1949-10-25 | |||
| BE512852A (en) * | 1951-07-17 | |||
| NL174029B (en) * | 1951-11-29 | Joseph Salim Peress | HOLLOW ARTICLES FOR FOR EXAMPLE A DIVING SUIT. | |
| IT500079A (en) * | 1952-02-27 | |||
| CH315203A (en) * | 1952-03-24 | 1956-07-31 | Siemens Ag | Cathode for electrical discharge vessels |
-
0
- BE BE561832D patent/BE561832A/xx unknown
- NL NL100722D patent/NL100722C/xx active
-
1956
- 1956-10-24 US US618072A patent/US2869017A/en not_active Expired - Lifetime
-
1957
- 1957-10-19 DE DEN14223A patent/DE1042136B/en active Pending
- 1957-10-21 CH CH355529D patent/CH355529A/en unknown
- 1957-10-21 GB GB32781/57A patent/GB857090A/en not_active Expired
- 1957-10-22 FR FR1185028D patent/FR1185028A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB857090A (en) | 1960-12-29 |
| BE561832A (en) | |
| FR1185028A (en) | 1959-07-29 |
| US2869017A (en) | 1959-01-13 |
| DE1042136B (en) | 1958-10-30 |
| CH355529A (en) | 1961-07-15 |