FR1449539A - Pompe à vide - Google Patents

Pompe à vide

Info

Publication number
FR1449539A
FR1449539A FR34781A FR34781A FR1449539A FR 1449539 A FR1449539 A FR 1449539A FR 34781 A FR34781 A FR 34781A FR 34781 A FR34781 A FR 34781A FR 1449539 A FR1449539 A FR 1449539A
Authority
FR
France
Prior art keywords
vacuum pump
vacuum
pump
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
FR34781A
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.)
Coulter Electronics Inc
Original Assignee
Coulter Electronics 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 US411532A external-priority patent/US3289916A/en
Application filed by Coulter Electronics Inc filed Critical Coulter Electronics Inc
Priority to FR34781A priority Critical patent/FR1449539A/fr
Application granted granted Critical
Publication of FR1449539A publication Critical patent/FR1449539A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR34781A 1964-11-16 1965-10-13 Pompe à vide Expired FR1449539A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR34781A FR1449539A (fr) 1964-11-16 1965-10-13 Pompe à vide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US411532A US3289916A (en) 1964-11-16 1964-11-16 Variable pressure pump for manometric metering device
FR34781A FR1449539A (fr) 1964-11-16 1965-10-13 Pompe à vide

Publications (1)

Publication Number Publication Date
FR1449539A true FR1449539A (fr) 1966-08-12

Family

ID=26166740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34781A Expired FR1449539A (fr) 1964-11-16 1965-10-13 Pompe à vide

Country Status (1)

Country Link
FR (1) FR1449539A (fr)

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