EARTH MOVING MACHINES, NAMELY, EXCAVATORS, WITH AND WITHOUT BUCKETS; ATTACHMENTS FOR EXCAVATORS, NAMELY, POWER DRIVEN BARREL GRIPPERS; MACHINES FOR USE IN THE DEMOLITION INDUSTRY, NAMELY, EXCAVATORS, BULLDOZERS AND BACKHOES; MACHINES, NAMELY, CRUSHERS FOR INDUSTRIAL AND COMMERCIAL APPLICATION; MACHINE PARTS, NAMELY, NON-ELECTRIC COUPLERS; AMPHIBIOUS PONTOON-TYPE EXCAVATORS