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FR27915E - Improved method and apparatus for controlling the degree of vacuum of chi-ray tubes and other electric discharge tubes - Google Patents

Improved method and apparatus for controlling the degree of vacuum of chi-ray tubes and other electric discharge tubes

Info

Publication number
FR27915E
FR27915E FR27915DA FR27915E FR 27915 E FR27915 E FR 27915E FR 27915D A FR27915D A FR 27915DA FR 27915 E FR27915 E FR 27915E
Authority
FR
France
Prior art keywords
tubes
chi
vacuum
degree
controlling
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.)
BRITISH SCIENT INSTR RES ASS
Original Assignee
BRITISH SCIENT INSTR RES ASS
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
Priority claimed from GB918821A external-priority patent/GB182195A/en
Application filed by BRITISH SCIENT INSTR RES ASS filed Critical BRITISH SCIENT INSTR RES ASS
Application granted granted Critical
Publication of FR27915E publication Critical patent/FR27915E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/20—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
FR27915D 1921-03-24 1923-07-09 Improved method and apparatus for controlling the degree of vacuum of chi-ray tubes and other electric discharge tubes Expired FR27915E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB918821A GB182195A (en) 1921-03-24 1921-03-24 Improved method and means for regulating the degree of vacuum in x-ray tubes
GB1417123A GB208480A (en) 1921-03-24 1923-05-29 Improved method and means for regulating the degree of vacuum in x-ray tubes

Publications (1)

Publication Number Publication Date
FR27915E true FR27915E (en) 1924-09-27

Family

ID=40350264

Family Applications (1)

Application Number Title Priority Date Filing Date
FR27915D Expired FR27915E (en) 1921-03-24 1923-07-09 Improved method and apparatus for controlling the degree of vacuum of chi-ray tubes and other electric discharge tubes

Country Status (3)

Country Link
DE (1) DE390858C (en)
FR (1) FR27915E (en)
GB (1) GB208480A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL193415A (en) * 1953-12-21

Also Published As

Publication number Publication date
GB208480A (en) 1923-12-20
DE390858C (en) 1924-02-23

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