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WOOD PULPING-DELIGNIFICATION IN THE PRESENCE OF HIGH SULFUR DIOXIDE CONCENTRATIONS
US 3,523,060 A
Filed
: 10/16/1967
Issued
: 08/04/1970
Est. Priority Date
: 10/16/1967
Status: Expired due to Term
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Current Assignee
Frank L. Wells
,
Lloyd E. Herdle
,
Walker Alexander Jr
Original Assignee
Frank L. Wells
,
Lloyd E. Herdle
,
Walker Alexander Jr
Inventors
Herdle, Lloyd E.
,
WALKER ALEXANDER JR
,
Wells, Frank L.
Application Number
US04/675,607
Time in Patent Office
1,023 Days
Field of Search
US Class Current
162/76
CPC Class Codes
D21C 3/06
sulfur dioxide; sulfurous a...
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