Title:
Releasable permanent magnet holding device
United States Patent 2280437

Inventors:
Levesque, George N.
Publication Date:
04/21/1942
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Assignee:
BROWN AND SHARPE MFG COMPANY
Primary Class:
335/295
Other Classes:
248/904, 409/903, 279/128, 269/8, 248/206.500, 33/DIG.001
International Classes:
B23Q3/154; H01F7/02; B23Q3/15