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. 03, 1978
Filed:
Sep. 13, 1976
Applicant:
Inventor:
Richard M Bobbe, Rochester, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-4 ; 96 45 ; 355 32 ;
Abstract
A half-tone screen in which a first and second set of grooves are inscribed in a transparent member. The grooves are arranged in a repetitive pattern with each groove from the first set being interposed between adjacent grooves of the second set, and the width of each groove of the first set being greater than the width of each groove of the second set.