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http://www.google.com.au/patents/US3597094?utm_source=gb-gplus-share
Patent US3597094 - PORTABLE COLOR IDENTIFICATION DEVICE
PORTABLE COLOR IDENTIFICATION DEVICE
Marietta St. N.E. et al
› Overview
Abstract
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Description
Claims
Patent number
: 3597094
Filing date
: 11 Aug 1967
Issue date
: 3 Aug 1971
Inventors
:
Marietta St. N.E.
,
Marietta St. N.E.
Current U.S. Classification
:
356/419
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US6614530
4 May 2001
2 Sep 2003
Biophotonics S.A.
Method and device for the colorimetric measurement of a colored surface
Drawings
Drawings
