FR1549955A - - Google Patents

Info

Publication number
FR1549955A
FR1549955A FR1549955DA FR1549955A FR 1549955 A FR1549955 A FR 1549955A FR 1549955D A FR1549955D A FR 1549955DA FR 1549955 A FR1549955 A FR 1549955A
Authority
FR
France
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)
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 FR1549955A publication Critical patent/FR1549955A/fr
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
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes
    • 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
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes
FR1549955D 1967-01-05 1968-01-04 Expired FR1549955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH32067A CH448559A (en) 1967-01-05 1967-01-05 Cold cathode ionization manometer tube

Publications (1)

Publication Number Publication Date
FR1549955A true FR1549955A (en) 1968-12-13

Family

ID=4184327

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1549955D Expired FR1549955A (en) 1967-01-05 1968-01-04

Country Status (3)

Country Link
CH (1) CH448559A (en)
FR (1) FR1549955A (en)
NL (1) NL6704787A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9111747D0 (en) * 1991-05-31 1991-07-24 Boc Group Plc Improvements relating to vacuum pumps
DE19717263A1 (en) 1997-04-24 1998-10-29 Leybold Vakuum Gmbh Penning vacuum gauge

Also Published As

Publication number Publication date
NL6704787A (en) 1968-07-08
CH448559A (en) 1967-12-15

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Legal Events

Date Code Title Description
ST Notification of lapse