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US 2,980,403 A
Filed
: 06/05/1958
Issued
: 04/18/1961
Est. Priority Date
: 05/16/1951
Status: Expired due to Term
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Current Assignee
Gustav Ahlen Karl
Original Assignee
Gustav Ahlen Karl
Inventors
GUSTAV AHLEN KARL
Application Number
US03/740,017
Time in Patent Office
1,048 Days
Field of Search
US Class Current
165/90
CPC Class Codes
F28D 11/02
the movement being rotary, ...
F28F 5/02
Rotary drums or rollers
Y10S 165/159
with particular flow path o...
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