The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 1994
Filed:
Aug. 27, 1992
Applicant:
Inventors:
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Science Systems, Ltd., Katsuta, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250311 ;
Abstract
In a transmission electron microscope, an electron beam from an electron gun is irradiated on a specimen by an illuminating lens system and a transmission image of the specimen is formed on a photographic film by an image forming lens system. The transmission image is picked up by a TV camera and displayed on a television display screen and a view field range of recording image with the photographic film is manifested on the display screen.