FR904878A - - Google Patents
Info
- Publication number
- FR904878A FR904878A FR904878DA FR904878A FR 904878 A FR904878 A FR 904878A FR 904878D A FR904878D A FR 904878DA FR 904878 A FR904878 A FR 904878A
- Authority
- FR
- France
- 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
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL240536X | 1943-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR904878A true FR904878A (nl) | 1945-12-26 |
Family
ID=19780502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR904878D Expired FR904878A (nl) | 1943-01-30 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2459284A (nl) |
| BE (1) | BE454150A (nl) |
| CH (1) | CH240536A (nl) |
| FR (1) | FR904878A (nl) |
| GB (1) | GB626331A (nl) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1426801A (en) * | 1922-08-22 | Repeater for ttndtjlatory currents | ||
| US1038910A (en) * | 1911-01-30 | 1912-09-17 | Siegmund Strauss | Relay for undulatory currents. |
| NL37515C (nl) * | 1927-10-15 | |||
| FR793911A (fr) * | 1934-09-05 | 1936-02-04 | Philips Nv | Montage électrique comportant un tube redresseur rempli d'un ou de plusieurs gaz ou vapeurs ou bien d'un mélange de gaz et de vapeur et muni d'au moins deux groupes d'anodes |
| US2217185A (en) * | 1935-12-21 | 1940-10-08 | Raytheon Mfg Co | Gaseous discharge device |
-
0
- FR FR904878D patent/FR904878A/fr not_active Expired
- BE BE454150D patent/BE454150A/xx unknown
-
1944
- 1944-01-28 CH CH240536D patent/CH240536A/de unknown
-
1946
- 1946-07-20 US US685208A patent/US2459284A/en not_active Expired - Lifetime
- 1946-10-16 GB GB30832/46A patent/GB626331A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2459284A (en) | 1949-01-18 |
| GB626331A (en) | 1949-07-13 |
| BE454150A (nl) | |
| CH240536A (de) | 1945-12-31 |