SPOT PROJECTING DEVICE
United States Patent 3469905
US Patent References:
Television apparatus
- - 1800601

Golf game
- - 2581738

Image superimposition apparatus
- - 2772600

Camera exposure control
- - 3143046


Inventors:
Baldwin, Bradford J.
Cornell, William D.
Hoffman, Paul R.
Russell, Jack A.
Publication Date:
09/30/1969
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Assignee:
BRUNSWICK CORP
Primary Class:
352/39
Other Classes:
352/131, 473/156, 362/306, 352/40
International Classes:
A63B69/36; G03B21/26; G03B19/18; G03B21/32
Foreign References:
FR1228123A
CA736213A




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