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RESTRICTION INDICATOR
US 3,443,365 A
Filed
: 12/06/1967
Issued
: 05/13/1969
Est. Priority Date
: 12/06/1967
Status: Expired due to Term
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0
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0
Product Citations
0
Petitions
24
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0
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24 Citations
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Current Assignee
Raymond L. Schenk
,
Stuart J. Lee
Original Assignee
Raymond L. Schenk
,
Stuart J. Lee
Inventors
Lee, Stuart J.
,
Schenk, Raymond L.
Application Number
US04/688,406
Time in Patent Office
524 Days
Field of Search
US Class Current
96/421
CPC Class Codes
B01D 35/143
Filter condition indicators
B01D 46/0086
Filter condition indicators
F02M 35/09
Clogging indicators ; Diagn...
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