Magnetic stud finder
United States Patent 2933679
US Patent References:
/1035973.html
- - 1035973

Pocket compass
- - 2687577

Wall stud locator
- - 2723369


Inventors:
Bray, Richard D.
Publication Date:
04/19/1960
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Assignee:
Bray, Richard D.
Primary Class:
324/228
Other Classes:
324/67, 33/355R, 7/901, 335/302
International Classes:
G01V3/15