FR977856A - Improvements to electron microscopes - Google Patents

Improvements to electron microscopes

Info

Publication number
FR977856A
FR977856A FR977856DA FR977856A FR 977856 A FR977856 A FR 977856A FR 977856D A FR977856D A FR 977856DA FR 977856 A FR977856 A FR 977856A
Authority
FR
France
Prior art keywords
electron microscopes
microscopes
electron
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR977856A publication Critical patent/FR977856A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
    • H01J37/27—Shadow microscopy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Electron Sources, Ion Sources (AREA)
FR977856D 1944-02-18 1947-12-22 Improvements to electron microscopes Expired FR977856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US522875A US2422041A (en) 1944-02-18 1944-02-18 Electron microscope

Publications (1)

Publication Number Publication Date
FR977856A true FR977856A (en) 1951-04-06

Family

ID=24082724

Family Applications (1)

Application Number Title Priority Date Filing Date
FR977856D Expired FR977856A (en) 1944-02-18 1947-12-22 Improvements to electron microscopes

Country Status (4)

Country Link
US (1) US2422041A (en)
BE (1) BE479996A (en)
FR (1) FR977856A (en)
GB (1) GB637361A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813991A (en) * 1952-11-05 1957-11-19 Gen Electric Electron emitting electrode
US5654548A (en) * 1992-08-06 1997-08-05 International Business Machines Corporation Source for intense coherent electron pulses
US5376792A (en) * 1993-04-26 1994-12-27 Rj Lee Group, Inc. Scanning electron microscope

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2249453A (en) * 1938-12-02 1941-07-15 Gen Electric Electron microscope
CH219289A (en) * 1939-07-22 1942-01-31 Fides Gmbh Electron microscope.
CA432875A (en) * 1939-07-29 1946-01-29 G. Ramberg Edward Electron microscope
US2363359A (en) * 1941-05-01 1944-11-21 Gen Electric Electron microscope

Also Published As

Publication number Publication date
BE479996A (en)
GB637361A (en) 1950-05-17
US2422041A (en) 1947-06-10

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