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United States Patent 3522814
Inventors:
Olson, Gene R.
Publication Date:
08/04/1970
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Download PDF 3522814
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Assignee:
SAFETY KLEEN CORP
Primary Class:
134/111
Other Classes:
134/113, 134/174
International Classes:
B08B3/00
; B08B3/02; B08B3/08
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