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http://www.google.co.uk/patents/US1990790?utm_source=gb-gplus-share
Patent US1990790 - ELECTRIC WATER HEATER
ELECTRIC WATER HEATER
Otto A. Lenz et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 1990790
Filing date
: 22 Sep 1932
Issue date
: 12 Feb 1935
Inventors
:
Otto A. Lenz
,
Otto A. Lenz
Current U.S. Classification
:
392/322
;
392/328
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US4155001
23 Mar 1977
15 May 1979
Electrode-type vaporizer
USD280776
29 Sep 1982
1 Oct 1985
Kangaroos U.S.A., Inc.
Athletic shoe with pocket
Drawings
Drawings
Drawings
