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. 30, 2001
Filed:
Mar. 22, 1999
Applicant:
Inventors:
Steven J. Ouderkirk, West Richland, WA (US);
Alan Blair, St. Paul, MN (US);
Matthew C. Boettner, Woodbury, MN (US);
Assignee:
Kovex Corporation, Arden Hills, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02B 2/714 ;
U.S. Cl.
CPC ...
B02B 2/714 ;
Abstract
A calibration device which has at least two targets. Each target has at least one surface exhibiting areas of optical contrast, and each surface has a general plane of orientation. The targets are oriented such that a general plane of orientation of one target is inclined at an angle relative to the general plane of orientation of a surface of the second target which has areas of optical contrast.