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Air cleaner
US 2,143,421 A
Filed
: 09/07/1937
Issued
: 01/10/1939
Est. Priority Date
: 09/07/1937
Status: Expired due to Term
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0
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0
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0
Petitions
26
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0
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Current Assignee
Claude E. Loehr
,
Jacob H. Hill
Original Assignee
Claude E. Loehr
,
Jacob H. Hill
Inventors
Loehr, Claude E.
,
Hill, Jacob H.
Application Number
US02/162,594
Time in Patent Office
490 Days
Field of Search
US Class Current
55/424
CPC Class Codes
B04C 5/103
Bodies or members, e.g. bul...
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