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US20130082509 Surface truss planer  
An improved mechanism for grinding surfaces flat is presented, involving a precision grinder with grinding heads that are adjustable in a vertical dimension controlled by a support structure on...
US20110037307 SYSTEMS, MACHINES, DEVICES AND METHODS FOR EFFICIENTLY REMOVING SIDEWALK TRIP HAZARDS  
A trip hazard removing apparatus includes a saw head and blade connected to guide rail(s), which are connected to a support structure, which is connected to lift arm(s) of a vehicle. The vehicle...
US20070144788 Setting utility access covers  
Apparatus and method of setting access covers to grade wherein the apparatus includes rubblizing bits and a vacuum, the first rubblizing bit having a central core with attached carriers for teeth...
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