Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Duane R. De Boef0
Gary Verhoef0
Keith Roozeboom0
Date of Patent
May 8, 2007
Patent Application Number
10953208
Date Filed
September 28, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A rotary grinder having a cylindrical drum that includes a cylindrical surface. The cylindrical surface defines two holes. The drum receives opposite ends of a through-member at the two holes such that the opposite ends of the through-member comprise hammers when the cylindrical drum is rotated. A single retaining member is used to secure all of the through-members to the drum.
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