G - Physics – 12 – B
Patent
G - Physics
12
B
G12B 11/00 (2006.01) F21V 8/00 (2006.01) F21V 33/00 (2006.01) F24C 7/08 (2006.01) G02F 1/13 (2006.01)
Patent
CA 2667171
A control unit including a keypad having a plurality control indicators, a light producing device configured to illuminate the control indicators, and a light blocking device disposed between the control indicators and the light producing device and configured to selectively restrict or transmit light from the light producing device to the control indicators.
Company General Electric
Craig Wilson And Company
LandOfFree
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