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BIDIRECTIONAL FILTER DEVICE
US 3,472,380 A
Filed
: 12/27/1966
Issued
: 10/14/1969
Est. Priority Date
: 12/27/1966
Status: Expired due to Term
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Current Assignee
Nils O. Rosaen
Original Assignee
Nils O. Rosaen
Inventors
Rosaen, Nils O.
Application Number
US04/605,019
Time in Patent Office
1,022 Days
Field of Search
US Class Current
210/90
CPC Class Codes
B01D 29/114
arranged for inward flow fi...
B01D 29/96
in which the filtering elem...
B01D 35/143
Filter condition indicators
B01D 35/147
Bypass or safety valves
B01D 35/15
Bidirectional working filters
Y10S 116/42
Oil filter
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