FR2241779A1 - - Google Patents

Info

Publication number
FR2241779A1
FR2241779A1 FR7429162A FR7429162A FR2241779A1 FR 2241779 A1 FR2241779 A1 FR 2241779A1 FR 7429162 A FR7429162 A FR 7429162A FR 7429162 A FR7429162 A FR 7429162A FR 2241779 A1 FR2241779 A1 FR 2241779A1
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.)
Granted
Application number
FR7429162A
Other languages
French (fr)
Other versions
FR2241779B3 (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
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2241779A1 publication Critical patent/FR2241779A1/fr
Application granted granted Critical
Publication of FR2241779B3 publication Critical patent/FR2241779B3/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
FR7429162A 1973-08-24 1974-08-26 Expired FR2241779B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00391392A US3839655A (en) 1973-08-24 1973-08-24 Bayard-alpert vacuum ionization tube

Publications (2)

Publication Number Publication Date
FR2241779A1 true FR2241779A1 (en) 1975-03-21
FR2241779B3 FR2241779B3 (en) 1976-03-19

Family

ID=23546407

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7429162A Expired FR2241779B3 (en) 1973-08-24 1974-08-26

Country Status (5)

Country Link
US (1) US3839655A (en)
JP (1) JPS5073684A (en)
DE (1) DE2440090A1 (en)
FR (1) FR2241779B3 (en)
IT (1) IT1020185B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991330A (en) * 1982-11-17 1984-05-26 Ulvac Corp Insulating type ionization gage
US4636680A (en) * 1983-05-24 1987-01-13 Granville-Phillips Company Vacuum gauge
JPH01143928A (en) * 1987-11-30 1989-06-06 Tokuda Seisakusho Ltd Ion gauge
US5422573A (en) * 1990-04-11 1995-06-06 Granville-Phillips Company Ionization gauge and method of using and calibrating same
US5128617A (en) * 1990-04-11 1992-07-07 Granville-Phillips Company Ionization vacuum gauge with emission of electrons in parallel paths
US5250906A (en) * 1991-10-17 1993-10-05 Granville-Phillips Company Ionization gauge and method of using and calibrating same
US5296817A (en) * 1990-04-11 1994-03-22 Granville-Phillips Company Ionization gauge and method of using and calibrating same
DE9116476U1 (en) * 1991-04-16 1992-12-24 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften Ev, 3400 Goettingen, De
JP3069975B2 (en) * 1991-09-06 2000-07-24 アネルバ株式会社 Ionization gauge
CA2288798A1 (en) 1997-05-09 1998-11-12 The Fredericks Company Bayard-alpert vacuum gauge with neutralization of x-ray effect
DE102005010716A1 (en) * 2005-03-09 2006-09-14 Inficon Gmbh Cold cathode pressure sensor
DK2800960T3 (en) 2012-02-08 2019-01-28 Mks Instr Inc Ionization meter for high pressure operation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743876A (en) * 1969-10-07 1973-07-03 Canadian Patents Dev Hot-cathode ionization gauge having electrode means for shaping the electric field in the vicinity of the cathode

Also Published As

Publication number Publication date
DE2440090A1 (en) 1975-02-27
JPS5073684A (en) 1975-06-17
IT1020185B (en) 1977-12-20
US3839655A (en) 1974-10-01
FR2241779B3 (en) 1976-03-19

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Legal Events

Date Code Title Description
ST Notification of lapse