Decibeloscope
United States Patent 2486890
US Patent References:
System and method of determining distance
- - 2120971
Indicator
- - 2179101
Golf practice apparatus
- - 2331236
Indicating apparatus and method
- - 2398046
Communication system
- - 2407286
System and method of determining distance
- - 2120971
Indicator
- - 2179101
Golf practice apparatus
- - 2331236
Indicating apparatus and method
- - 2398046
Communication system
- - 2407286
Inventors:
Stanmyre, Rudolph W.
Publication Date:
11/01/1949
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Assignee:
Stanmyre, Rudolph W.
Primary Class:
Other Classes:
324/121R, 324/103R
International Classes:
G01H3/00