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:
Nov. 20, 1984
Filed:
Jun. 02, 1982
Applicant:
Inventors:
Thomas A Booth, Flanders, NJ (US);
Frank L Scholten, Katonah, NY (US);
Assignee:
AM International, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; G05F / ;
U.S. Cl.
CPC ...
346160 ; 315398 ; 3461 / ;
Abstract
Registration is maintained as between an electron beam and that portion of a light-emissive interface selected for visualizing beam-defined characters by providing a discernible indicium on the interface at a location exterior to the selected interface portion and interacting the beam with interface area inclusive of the indicium. Signals are generated by a detector viewing such interface area and information for correction of beam deflection is obtained from the signals.