47932 ⎘
Working stone or stone-like materials, e.g. brick, concrete or glass , not provided for elsewhere; Machines, devices, tools therefor; Artificial ageing of stones; Providing stones with an antique appearance by means of a tumbler
BLOCK TUMBLER WITH BLOCK-IMMOBILIZING DEVICE
#2Feeder for tumblers
#3Stone fabrication scheme
#4Method for ageing a package of stones
#5Tumbler for artificially ageing the appearance of concrete blocks