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Air purifier
US 2,994,405 A
Filed
: 12/31/1958
Issued
: 08/01/1961
Est. Priority Date
: 12/31/1958
Status: Expired due to Term
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Current Assignee
Alvan L. Barach
,
William B. Hall
Original Assignee
Alvan L. Barach
,
William B. Hall
Inventors
Barach, Alvan L.
,
Hall, William B.
Application Number
US03/784,386
Time in Patent Office
944 Days
Field of Search
US Class Current
423/210
CPC Class Codes
F24F 8/192
by electrical means, e.g. b...
Y02A 50/20
Air quality improvement or ...
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