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Color mixing lighting apparatus
US 2,686,866 A
Filed
: 12/20/1949
Issued
: 08/17/1954
Est. Priority Date
: 12/20/1949
Status: Expired due to Term
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Current Assignee
Gillespie Williams Rollo
Original Assignee
Gillespie Williams Rollo
Inventors
GILLESPIE WILLIAMS ROLLO
Application Number
US03/133,992
Time in Patent Office
1,701 Days
Field of Search
US Class Current
362/231
CPC Class Codes
F21S 8/04
intended only for mounting ...
F21V 7/041
with conical or pyramidal s...
F21W 2131/40
Lighting for industrial, co...
F21Y 2113/00
Combination of light sources
F21Y 2113/10
of different colours
G01J 3/10
Arrangements of light sourc...
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