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:
Mar. 19, 1991
Filed:
Oct. 24, 1989
Applicant:
Inventors:
Assignee:
Dr. Johannes Heidenhain GmbH, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
25023116 ; 2502 / ; 25022721 ;
Abstract
An interferometric type photoelectric measuring device is disclosed. The photoelectric angle measuring device includes a graduation carrier having a circular graduation and a scanning arrangement for the diametral scanning of the circular graduation. The scanning arrangement is constructed as an integrated optical circuit.