United States Patent 3104879
US Patent References:
Golf course marker
- - 2041119

Golf driving range
- - 2701140

Golf targets
- - 2743929

Golfer's training device
- - 2917312


Publication Date:
09/24/1963
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Primary Class:
473/153
Other Classes:
340/323R, 200/61.110
International Classes:
A63B57/00; A63B69/36