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United States Patent 2278547
Inventors:
Herrington, Ralph J.
Publication Date:
04/07/1942
View Patent Images:
Download PDF 2278547
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Assignee:
Herrington, Ralph J.
Primary Class:
123/185.300
Other Classes:
74/140, 185/41R, 123/185.200
International Classes:
F02N3/02
;
F02N3/00