FR77812E - Electric vacuum pump and pumping method - Google Patents

Electric vacuum pump and pumping method

Info

Publication number
FR77812E
FR77812E FR828687A FR828687A FR77812E FR 77812 E FR77812 E FR 77812E FR 828687 A FR828687 A FR 828687A FR 828687 A FR828687 A FR 828687A FR 77812 E FR77812 E FR 77812E
Authority
FR
France
Prior art keywords
vacuum pump
electric vacuum
pumping method
pumping
electric
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
FR828687A
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.)
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
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Priority to FR828687A priority Critical patent/FR77812E/en
Application granted granted Critical
Publication of FR77812E publication Critical patent/FR77812E/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
FR828687A 1960-05-31 1960-05-31 Electric vacuum pump and pumping method Expired FR77812E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR828687A FR77812E (en) 1960-05-31 1960-05-31 Electric vacuum pump and pumping method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR828687A FR77812E (en) 1960-05-31 1960-05-31 Electric vacuum pump and pumping method

Publications (1)

Publication Number Publication Date
FR77812E true FR77812E (en) 1962-04-27

Family

ID=8732487

Family Applications (1)

Application Number Title Priority Date Filing Date
FR828687A Expired FR77812E (en) 1960-05-31 1960-05-31 Electric vacuum pump and pumping method

Country Status (1)

Country Link
FR (1) FR77812E (en)

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