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Dust indicator for air-method cleaning systems
US 2,353,621 A
Filed
: 10/13/1941
Issued
: 07/11/1944
Est. Priority Date
: 10/13/1941
Status: Expired due to Term
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Current Assignee
Carl S. Replogle
,
Harold E. Queen
,
Laurie H. Bullock
,
SAV Bank of America National T
Original Assignee
Carl S. Replogle
,
Harold E. Queen
,
Laurie H. Bullock
,
SAV Bank of America National T
Inventors
SAV BANK OF AMERICA NATIONAL T
,
Replogle, Carl S.
,
Queen, Harold E.
,
Bullock, Laurie H.
Application Number
US02/414,858
Time in Patent Office
1,002 Days
Field of Search
US Class Current
406/36
CPC Class Codes
A47L 9/19
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