Rack and pinion jacking device
Rack cleaning device
Rack rake
Railroad ballast undercutter with rotary trencher
Railroad cable laying apparatus
Railroad crossing signal foundation
Railroad crossing signal foundation and spider and method of...
Railway bed piling driving machine
Rain gutter and mounting means therefor
Raising structure for manhole cover
Rake for trash rack
Ramp for temporarily elevated utility access hole
Rapid construction of ice structures with chemically treated...
Rapid-assembly earth retaining device
Rapid-removal platform for drilling hydrocarbon deposits and...
Rapidly deployable air inflatable boom and containment system
Rcc dam construction and method
Re-useable manhole base forming method and apparatus
Rear accessible service hatch
Rear dumping dragline bucket