47183 ⎘
Manufacture or reconditioning of specific semi-finished or finished articles of railroad sleepers
Method for maintaining wood railroad ties
#2COMPOSITION AND METHOD FOR MAINTAINING WOOD RAILROAD TIES
#3Composition, device, and method for maintaining wood railroad ties
#4Railroad tie preservation system
#5TREATMENT TANK FOR WOODEN ARTICLES
#6Treatment tank for wood articles
#7Rehabilitation of discarded wooden railroad ties having disabling cracks in the ends of the ties
#8Rehabilitation of discarded wooden railroad ties having disabling cracks in the ends of the ties
#9Rehabilitation of discarded wooden railroad ties having disabling cracks in the ends of the ties