Golfer's head movement indicator
United States Patent 3243186
US Patent References:
N/A
3104880

Sleep preventing alarm
3054868

Mouth opening alarm
2999232

Golf practice device
2755091

Driver's alarm
2747038


Inventors:
Shelby, Johnson
Publication Date:
03/29/1966
Assignee:
Shelby, Johnson
Primary Class:
Other Classes:
340/323R, 200/52R, 434/252, 200/61.420
International Classes:
A63B69/36
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