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:
Jan. 17, 1989
Filed:
Apr. 13, 1987
Applicant:
Inventor:
Emmanuel de Chambost, Molieres, FR;
Assignee:
THOMSON-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250310 ; 2503 / ; 2504922 ; 2503 / ;
Abstract
An electronic beam device is provided for projecting the image of an object on a sample, including two electromagnetic lens reduction stages. A single insulating tube is disposed between an object and the same plane, this tube having an inner metallized face.