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http://www.google.com.au/patents/US2180570?utm_source=gb-gplus-share
Patent US2180570 - APPARATUS FOR FINISHING THE EDGES OF
APPARATUS FOR FINISHING THE EDGES OF
Gurry Ora Walper
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Abstract
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Description
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Patent number
: 2180570
Filing date
: 16 Jul 1937
Issue date
: 21 Nov 1939
Inventor
:
Gurry Ora Walper
Current U.S. Classification
:
451/190
;
15/97.1
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US7223311
2 Oct 2002
29 May 2007
Method and apparatus for fabricating gypsum board
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