Removable retraction scraper
Removable self-retaining shoulder block for fastening rails...
Removable snowplow with a pivotable lift stand
Removable speed reducer bump
Removable surface covering
Removal and mounting apparatus for snowplows
Removal of accumulated material
Removing rails from a railbed
Repair and reinforcement method for preexisting structures...
Repair device for broken highway marker posts
Repairing rail ties
Repairing road surfaces
Replaceable flexible marker
Replaceable point frog
Replacement cap for compactor wheel
Replacement cap for compactor wheel
Reprofiling method of the rails of a railroad track and...
Resilient bearings
Resilient caps for cross-ties at railway crossings
Resilient composite useful as surfacing for athletics