FR690510A - Improvements to electric discharge devices - Google Patents

Improvements to electric discharge devices

Info

Publication number
FR690510A
FR690510A FR690510DA FR690510A FR 690510 A FR690510 A FR 690510A FR 690510D A FR690510D A FR 690510DA FR 690510 A FR690510 A FR 690510A
Authority
FR
France
Prior art keywords
electric discharge
discharge devices
devices
electric
discharge
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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schering Kahlbaum AG
Original Assignee
Schering Kahlbaum AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schering Kahlbaum AG filed Critical Schering Kahlbaum AG
Application granted granted Critical
Publication of FR690510A publication Critical patent/FR690510A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • 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)
FR690510D 1929-03-02 1930-02-24 Improvements to electric discharge devices Expired FR690510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US690510XA 1929-03-02 1929-03-02

Publications (1)

Publication Number Publication Date
FR690510A true FR690510A (en) 1930-09-23

Family

ID=22086410

Family Applications (1)

Application Number Title Priority Date Filing Date
FR690510D Expired FR690510A (en) 1929-03-02 1930-02-24 Improvements to electric discharge devices

Country Status (1)

Country Link
FR (1) FR690510A (en)

Similar Documents

Publication Publication Date Title
FR703219A (en) Improvements to filter devices
FR37922E (en) Improvements to thermionic discharge devices
FR655945A (en) Improvements to electrical discharge devices
FR690510A (en) Improvements to electric discharge devices
FR681367A (en) Improvements to electrolytic devices
FR675254A (en) Improvements to high frequency electrical devices
FR689312A (en) Improvements to vulcanizing devices
FR37958E (en) Improvements to light discharge devices
FR662368A (en) Improvements to light discharge devices
FR678257A (en) Improvements to space discharge devices
FR681935A (en) Improvements to mercury switches
FR697050A (en) Improvements to electrionic discharge devices
FR697043A (en) Improvements to electrolytic devices
FR696762A (en) Improvements to electro-acoustic devices
FR667300A (en) Improvements to electric eclipse lighting devices
FR675717A (en) Improvements to refrigeration devices
FR689000A (en) Improvements to refrigeration devices
FR705463A (en) Improvements to radio-electric devices
FR33497E (en) Improvements to cinematographic devices
FR642986A (en) Improvements to cinematographic devices
FR647748A (en) Improvements to cinematographic devices
FR701723A (en) Improvements made to electric discharge tubes
FR38053E (en) Improvements to piezoelectric devices
FR689767A (en) Improvements to electric shock devices
FR680883A (en) Improvements to indicating devices