Repair, maintenance and conversion in the nature of installing hydraulic energy regeneration system into automobiles and structural parts therefor; repair, maintenance and conversion in the nature of installing hydraulic energy regeneration system into loading-unloading machines and apparatus and structural parts therefor; repair, maintenance and conversion in the nature of installing hydraulic energy regeneration system into construction machines and apparatus; repair, maintenance and conver...

Power transmissions and gearing being machine elements not for land vehicles; hydraulic intensifiers being parts of machines; oil pressure cylinder for machines; fluid pressure cylinders for machines; liquid pressure cylinders for machines; hydraulic cylinders for machines; electric oil pressure actuators for machines; electric hydraulic actuators for machines; oil pressure motors; hydraulic motors; oil pressure drive clutches for machines for lifting heavy loads; hydraulic drive clutches for...