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US 2,783,682 A
Filed
: 08/25/1950
Issued
: 03/05/1957
Est. Priority Date
: 08/25/1950
Status: Expired due to Term
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Current Assignee
Oscar J. Swenson
Original Assignee
Oscar J. Swenson
Inventors
Swenson, Oscar J.
Application Number
US03/181,388
Time in Patent Office
2,384 Days
Field of Search
US Class Current
359/593
CPC Class Codes
E06B 2009/2411
Coloured fluid flow for lig...
E06B 3/6722
with adjustable passage of ...
G02B 1/06
made of fluids in transpare...
G02B 5/24
Liquid filters G02B5/23 tak...
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