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http://www.google.com.au/patents/US2981878?utm_source=gb-gplus-share
Patent US2981878 - HENDERSON
HENDERSON
Julian E. Henderson et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 2981878
Filing date
: 14 Sep 1956
Issue date
: 25 Apr 1961
Inventors
:
Julian E. Henderson
,
Julian E. Henderson
Current U.S. Classification
:
318/16
;
318/485
;
318/490
;
340/906
View patent at USPTO
Search USPTO Assignment Database
Referenced by
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Issue date
Original Assignee
Title
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Drawings
Drawings
Drawings
