GOLF SIGHT
United States Patent 3535792
US Patent References:
Putt direction finding method
- - 3293755
/0449681.html
- - 0449681
Hand leveling and plumbing tool
- - 2690015
Putt direction finding method
- - 3293755
/0449681.html
- - 0449681
Hand leveling and plumbing tool
- - 2690015
Inventors:
Douglas, Howard N.
Publication Date:
10/27/1970
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Export Citation:
Assignee:
Howard, Douglas N.
Primary Class:
Other Classes:
33/391, 473/404
International Classes:
G01C9/12; G01C9/00; G01C15/00
Foreign References:
| DE240920C |