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United States Patent
1,327,957
Issue Date:
January 13, 1920
Current U.S. Class:
232/19
; 232/45
Current International Class:
A47G 29/00 (20060101); A47G 29/122 (20060101); A47G 29/12 (20060101); G08B 3/00 (20060101); G08B 5/00 (20060101)
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