Rotary cutter head with jet flushing blades
Safe operation control for a snowblower
Scraper elevator with lower drive sprockets
Scrub crusher
Sea sled with jet pump for underwater trenching and slurry remov
Sealing and lubricating system for a dredge
Self-immersing jet pump
Self-loading scraper with pivotal floor panel
Self-propelled, non-riding trenching machine with a steering mec
Semi-automatic hydraulic excavator
Separable liquid flow screening means for excluding oversized, s
Separable means for excluding oversized slender objects
Shellfish dredge chafing gear
Shellfish dredge chafing gear
Ship and pier for extraction of valuable materials from the sea
Shock absorbing system for suction dredgers
Shrub-lifting machine with piston controlled anchor
Side cutter apparatus for an excavating machine
Single line deep-sea bucket and release
Ski trail forming and conditioning drag