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http://www.google.ca/patents/US1774869?utm_source=gb-gplus-share
Patent US1774869 - RATGHET-BAE-ACTUATING MECHANISM
RATGHET-BAE-ACTUATING MECHANISM
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Patent number
: 1774869
Filing date
: 1 Mar 1928
Issue date
: 2 Sep 1930
Current U.S. Classification
:
403/105
;
74/110
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US5517174
17 Jun 1994
14 May 1996
Waterbug Systems, Inc.
Water alarm and method of using same
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