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WATER REDUCING AND RETARDING ADMIXTURES FOR PORTLAND CEMENT SLURRIES
US 3,520,707 A
Filed
: 05/24/1967
Issued
: 07/14/1970
Est. Priority Date
: 05/24/1967
Status: Expired due to Term
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Current Assignee
Hamilton John Kelvin
,
John C. Steinberg
,
Kenneth R. Gray
Original Assignee
Hamilton John Kelvin
,
John C. Steinberg
,
Kenneth R. Gray
Inventors
Steinberg, John C.
,
Gray, Kenneth R.
,
HAMILTON JOHN KELVIN
Application Number
US04/640,832
Time in Patent Office
1,147 Days
Field of Search
US Class Current
106/730
CPC Class Codes
C04B 24/383
Cellulose or derivatives th...
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