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United States Patent
3,511,055
Issue Date:
May 12, 1970
Current U.S. Class:
60/229
; 239/265.29; 60/226.2; 239/265.31; 60/798
Current CPC Class:
F02K 1/72 (20130101)
Current International Class:
F02K 1/72 (20060101); F02K 1/00 (20060101)
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