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United States Patent
1,352,728
Issue Date:
September 14, 1920
Current U.S. Class:
40/124.4
; 283/48.1; 40/391
Current International Class:
B42F 19/00 (20060101); B42F 17/00 (20060101); B42F 19/04 (20060101); B42F 17/18 (20060101)
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