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http://www.google.ca/patents/US2308704?utm_source=gb-gplus-share
Patent US2308704 - INSTRUMENT ILLUMINATION
INSTRUMENT ILLUMINATION
Charles I. Macneil et al
› Overview
Abstract
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Description
Claims
Patent number
: 2308704
Filing date
: 14 Nov 1940
Issue date
: 19 Jan 1943
Inventors
:
Charles I. Macneil
,
Charles I. Macneil
Current U.S. Classification
:
362/27
;
359/437
;
359/488.01
;
359/494.01
;
362/19
;
362/30
View patent at USPTO
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Drawings
Drawings