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http://www.google.com/patents/US2338408?utm_source=gb-gplus-share
Patent US2338408 - MAKING PHOSPHORIC ACRO OF HIGH
MAKING PHOSPHORIC ACRO OF HIGH
John Harry Coleman et al
› Overview
Abstract
Description
Claims
Patent number
: 2338408
Filing date
: Nov 9, 1940
Issue date
: Jan 4, 1944
Inventors
:
John Harry Coleman
,
John Harry Coleman
Current U.S. Classification
:
423/316
;
423/320
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US4309395
Apr 21, 1980
Jan 5, 1982
Phosphoric acid production
