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http://www.google.com/patents/US1255750?utm_source=gb-gplus-share
Patent US1255750 - CONCRETE COWVEYHTO AND MIXING MACHINE
CONCRETE COWVEYHTO AND MIXING MACHINE
S. HUMPHREY et al
› Overview
Abstract
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Description
Claims
Patent number
: 1255750
Filing date
: Oct 25, 1915
Issue date
: Feb 5, 1918
Inventors
:
S. HUMPHREY
,
S. HUMPHREY
Current U.S. Classification
:
366/49
;
198/320
;
198/716
;
198/727
;
248/313
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US4846580
Mar 20, 1987
Jul 11, 1989
Rotec Industries, Inc.
Large scale concrete conveyance techniques
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