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United States Patent 2663654

Inventors:
Miller, Carl S.
Clark, Bryce L.
Publication Date:
12/22/1953
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Assignee:
MINNESOTA MINING & MFG
Primary Class:
430/340
Other Classes:
101/DIG.029, 430/944, 430/964, 270/59, 347/221, 430/616, 428/913, 430/346, 252/1
International Classes:
B41M5/32
Other References:
None