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Class 33/19.3 - Circular


Subclass of Class 33 - Geometrical instruments
Definition: Subject matter wherein the means for describing a line marks
No. of patents: 1
Last issue date: 04/28/1992


NumberTitleIssue Date
5108187Section grating generator
An apparatus comprising a circular ruling engine having a supporting means oscillatable in a controlled manner with a substrate section on said supporting means and means for lifting and lowering a ruling means to rule said substrate section to generate a... 		04/28/1992
 
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