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US 2,809,709 A
Filed
: 07/15/1955
Issued
: 10/15/1957
Est. Priority Date
: 07/15/1955
Status: Expired due to Term
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Current Assignee
Leino H. Billey
Original Assignee
Leino H. Billey
Inventors
Billey, Leino H.
Application Number
US03/522,292
Time in Patent Office
823 Days
Field of Search
US Class Current
181/266
CPC Class Codes
F01N 1/003
by using dead chambers comm...
F01N 1/084
the gases flowing through t...
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