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http://www.google.co.uk/patents/US1169596?utm_source=gb-gplus-share
Patent US1169596 - KATE SHIJTDLER AVERT EXECUTRIX
KATE SHIJTDLER AVERT EXECUTRIX
FIRE DOOR
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Patent number
: 1169596
Filing date
: 13 Apr 1911
Issue date
: 25 Jan 1916
Inventor
:
FIRE DOOR
Current U.S. Classification
:
49/1
View patent at USPTO
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Referenced by
Citing Patent
Filing date
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Original Assignee
Title
US7814705
23 Dec 2008
19 Oct 2010
Automatic storm shutter
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