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http://www.google.com.au/patents/US2649164?utm_source=gb-gplus-share
Patent US2649164 - CABINET FOB SOUND TRANSLATING
CABINET FOB SOUND TRANSLATING
H. F. OLSON et al
› Overview
Abstract
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Description
Claims
Patent number
: 2649164
Filing date
: 29 Dec 1949
Issue date
: 18 Aug 1953
Inventors
:
H. F. OLSON
,
H. F. OLSON
Current U.S. Classification
:
181/154
;
312/7.1
;
312/21
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
USD291800
19 Apr 1985
8 Sep 1987
Retractable speaker enclosure
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