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United States Patent
3,329,487
Issue Date:
July 4, 1967
Current U.S. Class:
75/242
; 106/1.22; 106/1.25; 419/15; 428/564; 75/241; 75/252
Current International Class:
B23K 35/24 (20060101); B23K 35/32 (20060101)
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