GB883190A - Electrical vacuum pump and vacuum gauge apparatus - Google Patents

Electrical vacuum pump and vacuum gauge apparatus

Info

Publication number
GB883190A
GB883190A GB13828/61A GB1382861A GB883190A GB 883190 A GB883190 A GB 883190A GB 13828/61 A GB13828/61 A GB 13828/61A GB 1382861 A GB1382861 A GB 1382861A GB 883190 A GB883190 A GB 883190A
Authority
GB
United Kingdom
Prior art keywords
vacuum
electrical
gauge apparatus
vacuum pump
vacuum gauge
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
GB13828/61A
Other languages
English (en)
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 US673816A external-priority patent/US2993638A/en
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Priority claimed from US801186A external-priority patent/US3088657A/en
Publication of GB883190A publication Critical patent/GB883190A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
    • H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances

Landscapes

  • Electron Tubes For Measurement (AREA)
  • Measuring Fluid Pressure (AREA)
GB13828/61A 1957-07-24 1958-07-02 Electrical vacuum pump and vacuum gauge apparatus Expired GB883190A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US673816A US2993638A (en) 1957-07-24 1957-07-24 Electrical vacuum pump apparatus and method
US801186A US3088657A (en) 1959-03-23 1959-03-23 Glow discharge vacuum pump apparatus

Publications (1)

Publication Number Publication Date
GB883190A true GB883190A (en) 1961-11-22

Family

ID=27101017

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13828/61A Expired GB883190A (en) 1957-07-24 1958-07-02 Electrical vacuum pump and vacuum gauge apparatus
GB7583/60A Expired GB942546A (en) 1957-07-24 1960-03-03 Glow discharge vacuum getter pump apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB7583/60A Expired GB942546A (en) 1957-07-24 1960-03-03 Glow discharge vacuum getter pump apparatus

Country Status (3)

Country Link
DE (1) DE1181364B (en:Method)
GB (2) GB883190A (en:Method)
NL (2) NL229703A (en:Method)

Also Published As

Publication number Publication date
NL131436C (nl) 1971-05-17
GB942546A (en) 1963-11-27
NL6504257A (nl) 1965-06-25
NL229703A (en:Method) 1965-06-25
DE1181364B (de) 1964-11-12

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