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http://www.google.com.au/patents/US1955597?utm_source=gb-gplus-share
Patent US1955597 - LAMBLJN-PARENT
LAMBLJN-PARENT
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Abstract
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Description
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Patent number
: 1955597
Filing date
: 17 Dec 1929
Issue date
: 17 Apr 1934
Current U.S. Classification
:
362/235
;
362/268
;
362/309
View patent at USPTO
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Referenced by
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Issue date
Original Assignee
Title
US5882105
16 Aug 1996
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US5934795
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Radiant Imaging, Inc.
Lens design for outdoor sign
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