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United States Patent
2,860,486
Issue Date:
November 18, 1958
Current U.S. Class:
60/580
; 188/151A
Current International Class:
B60T 11/10 (20060101); B60T 11/32 (20060101); F16K 17/28 (20060101); F16K 17/20 (20060101)
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