FR743186A - - Google Patents
Info
- Publication number
- FR743186A FR743186A FR743186DA FR743186A FR 743186 A FR743186 A FR 743186A FR 743186D A FR743186D A FR 743186DA FR 743186 A FR743186 A FR 743186A
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/95—Lamps with control electrode for varying intensity or wavelength of the light, e.g. for producing modulated light
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0067—Electrode assembly without control electrodes, e.g. including a screen
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743186A true FR743186A (en) | 1933-03-25 |
Family
ID=1547481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743186D Expired FR743186A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743186A (en) |
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0
- FR FR743186D patent/FR743186A/fr not_active Expired