FR2170208A1 - - Google Patents
Info
- Publication number
- FR2170208A1 FR2170208A1 FR7303741A FR7303741A FR2170208A1 FR 2170208 A1 FR2170208 A1 FR 2170208A1 FR 7303741 A FR7303741 A FR 7303741A FR 7303741 A FR7303741 A FR 7303741A FR 2170208 A1 FR2170208 A1 FR 2170208A1
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/38—Control electrodes, e.g. grid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0015—Non-sealed electrodes
- H01J2893/0017—Cylindrical, helical or annular grids
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7201534A NL7201534A (it) | 1972-02-05 | 1972-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2170208A1 true FR2170208A1 (it) | 1973-09-14 |
| FR2170208B1 FR2170208B1 (it) | 1977-08-26 |
Family
ID=19815300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7303741A Expired FR2170208B1 (it) | 1972-02-05 | 1973-02-02 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3806754A (it) |
| JP (1) | JPS4889674A (it) |
| CA (1) | CA975418A (it) |
| CH (1) | CH552282A (it) |
| DE (1) | DE2303776C3 (it) |
| FR (1) | FR2170208B1 (it) |
| GB (1) | GB1368542A (it) |
| NL (1) | NL7201534A (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976909A (en) * | 1975-07-11 | 1976-08-24 | Rca Corporation | Wire mesh cathode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2277148A (en) * | 1941-01-30 | 1942-03-24 | Bell Telephone Labor Inc | Electrode for electron discharge devices |
| NL88786C (it) * | 1955-04-02 | |||
| US3172002A (en) * | 1960-11-21 | 1965-03-02 | Rca Corp | Cathode mount and method of fabrication |
| JPS4329650Y1 (it) * | 1965-11-15 | 1968-12-05 |
-
1972
- 1972-02-05 NL NL7201534A patent/NL7201534A/xx not_active Application Discontinuation
-
1973
- 1973-01-26 DE DE2303776A patent/DE2303776C3/de not_active Expired
- 1973-02-02 GB GB532873A patent/GB1368542A/en not_active Expired
- 1973-02-02 FR FR7303741A patent/FR2170208B1/fr not_active Expired
- 1973-02-02 JP JP48013033A patent/JPS4889674A/ja active Pending
- 1973-02-02 CH CH147673A patent/CH552282A/xx not_active IP Right Cessation
- 1973-02-02 US US00329235A patent/US3806754A/en not_active Expired - Lifetime
- 1973-02-02 CA CA162,785A patent/CA975418A/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2303776B2 (de) | 1977-12-15 |
| FR2170208B1 (it) | 1977-08-26 |
| DE2303776A1 (de) | 1973-08-09 |
| DE2303776C3 (de) | 1978-08-10 |
| NL7201534A (it) | 1973-08-07 |
| US3806754A (en) | 1974-04-23 |
| GB1368542A (en) | 1974-09-25 |
| CH552282A (de) | 1974-07-31 |
| JPS4889674A (it) | 1973-11-22 |
| CA975418A (en) | 1975-09-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |