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http://www.google.com.au/patents/US2090084?utm_source=gb-gplus-share
Patent US2090084 - MANUFACTURE OF WALLBOARD
MANUFACTURE OF WALLBOARD
Curry Ora Walper et al
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Description
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Patent number
: 2090084
Filing date
: 1 Jun 1935
Issue date
: 17 Aug 1937
Inventors
:
Curry Ora Walper
,
Curry Ora Walper
Current U.S. Classification
:
156/45
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US5198052
22 Oct 1990
30 Mar 1993
Domtar, Inc.
Method of reshaping a gypsum board core and products made by same
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