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:
Aug. 29, 1978
Filed:
May. 13, 1977
Applicant:
Inventor:
Jacques Trotel, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21K / ;
U.S. Cl.
CPC ...
2503 / ; 2503 / ;
Abstract
A device to effect the programmed tracing of figures which have different shapes comprises two electron-optical systems respectively associated with two diaphragms. The first system forms the image of the first diaphragm at a fixed magnification, on the second diaphragm. The first electrically controlled deflection system makes it possible to displace said image in said plane. A second system forms an image of the thus defined diaphragm, in the object plane. A second deflection system makes it possible to displace said latter image in the object plane.