FR573342A - Improvements to thermionic devices - Google Patents

Improvements to thermionic devices

Info

Publication number
FR573342A
FR573342A FR573342DA FR573342A FR 573342 A FR573342 A FR 573342A FR 573342D A FR573342D A FR 573342DA FR 573342 A FR573342 A FR 573342A
Authority
FR
France
Prior art keywords
thermionic devices
thermionic
devices
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)
Inventor
Henri Rieffel
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 filed Critical
Application granted granted Critical
Publication of FR573342A publication Critical patent/FR573342A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/30—Vacuum-tight joints between parts of vessel using packing-material, e.g. sealing-liquid or elastic insert
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0047—Closure other than lamp base
FR573342D 1923-11-19 1923-11-19 Improvements to thermionic devices Expired FR573342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR573342T 1923-11-19

Publications (1)

Publication Number Publication Date
FR573342A true FR573342A (en) 1924-06-21

Family

ID=8951879

Family Applications (1)

Application Number Title Priority Date Filing Date
FR573342D Expired FR573342A (en) 1923-11-19 1923-11-19 Improvements to thermionic devices

Country Status (1)

Country Link
FR (1) FR573342A (en)

Similar Documents

Publication Publication Date Title
FR563876A (en) Improvements to tabulating devices
FR564684A (en) Improvements to refrigeration devices
FR574885A (en) Improvements to electrolytic devices
FR28173E (en) Improvements to thermionic devices
FR573342A (en) Improvements to thermionic devices
FR578681A (en) Improvements to cleaning devices
FR622723A (en) Improvements to piezoelectric devices
FR576443A (en) Improvements to telephone devices
FR562617A (en) Improvements to duplicating devices
FR27405E (en) Improvements to thermo-ionic devices
FR27228E (en) Improvements to thermo-ionic devices
FR571112A (en) Improvements to thermo-ionic devices
FR557899A (en) Improvements to thermionic devices
FR572344A (en) Improvements to screening devices
FR30077E (en) Improvements to thermionic devices
FR579467A (en) Improvements to spraying devices
FR566277A (en) Improvements to projection devices
FR572434A (en) Improvements to view projection devices
FR577322A (en) Improvements to transport devices
FR605123A (en) Improvements to refrigeration devices
FR576678A (en) Improvements to refrigeration devices
FR578853A (en) Improvements to refrigeration devices
FR27536E (en) Improvements to projection devices
FR584062A (en) Improvements to telephone devices
FR562020A (en) Improvements to flying devices