Reusable composite bridge structure and method of constructing a

Reversible ramp and method for fabricating same

River ramp for hovercraft

Road bridge construction with precast concrete modules

Rocker bearing for bridges on similar structures

Rocker-sliding bearing assembly and a method of lining the assem

Roll beam girder system for bridges

Roller carriage for portable bridges

Rolling platform assembly

Roof shingle remover tool

Roofing tool

Rotary cutter lathe tool

Rotary drive fastener

Rotary planer

Rotating gangway support platform

Rough hewn bench plane attachment

Run-off guard for a dock leveler

Runoff guard and dock leveler locking apparatus