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http://www.google.co.uk/patents/US3029422?utm_source=gb-gplus-share
Patent US3029422 - TORNADO ALARM
TORNADO ALARM
Gordon M. Wilson et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 3029422
Filing date
: 20 Apr 1959
Issue date
: 10 Apr 1962
Inventors
:
Gordon M. Wilson
,
Gordon M. Wilson
Current U.S. Classification
:
340/601
;
73/386
;
73/866.2
;
340/626
View patent at USPTO
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Drawings
Drawings
