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Ronald H. Carringi
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Madison, WI, US
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last 30 patents
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Patent Grant
Exercise machine with semi-dependent retraction system
Patent number
7,524,272
Issue date
Apr 28, 2009
Johnson Health Tech. Co., Ltd.
Robert C. Bruck
A63 - SPORTS GAMES AMUSEMENTS
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last 30 patents
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Patent Application
EXERCISE MACHINE WITH SEMI-DEPENDENT RETRACTION SYSTEM
Publication number
20070287601
Publication date
Dec 13, 2007
JOHNSON HEALTH TECH CO., LTD
Robert C. Burck
A63 - SPORTS GAMES AMUSEMENTS