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http://www.google.ca/patents/US1525309?utm_source=gb-gplus-share
Patent US1525309 - ELECTRIC DISPLAY SIGN
ELECTRIC DISPLAY SIGN
FRED A. LUND et al
› Overview
Abstract
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Description
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Patent number
: 1525309
Filing date
: 1 Aug 1924
Issue date
: 3 Feb 1925
Inventors
:
FRED A. LUND
,
FRED A. LUND
Current U.S. Classification
:
40/564
View patent at USPTO
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