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Muffler construction
US 2,690,812 A
Filed
: 05/09/1950
Issued
: 10/05/1954
Est. Priority Date
: 05/09/1950
Status: Expired due to Term
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3
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Current Assignee
Raymond K. Sparrow
Original Assignee
Raymond K. Sparrow
Inventors
Sparrow, Raymond K.
Application Number
US03/160,960
Time in Patent Office
1,610 Days
Field of Search
US Class Current
181/272
CPC Class Codes
F01N 1/08
by reducing exhaust energy ...
F01N 13/18
Construction facilitating m...
F01N 2450/22
by welding or brazing
F01N 2470/02
Tubes being perforated
F01N 2470/18
the axis of inlet or outlet...
F01N 2510/00
Surface coverings
F01N 2530/26
Multi-layered walls
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