4. Machines not elsewhere specified
  5. Material working, abrading, or founding machinery
  6. Deforming or crushing

Dempster Systems Inc.

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Bumper structure for vehicle having tiltable load carrier member

Vehicle fenders – Buffer or bumper type – Shiftable between operative and inoperative positions other...
Patent

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Fork and arm mechanism for refuse container

Material or article handling – Device for emptying portable receptacle – For emptying contents thereof into portable receiving means
Patent

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Gate operator and latch mechanism for refuse container

Movable or removable closures – Operator interrelated with closure latch release – Motor driven
Patent

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Hydraulic control system and valve therefor

Material or article handling – Self-loading or unloading vehicles – Conveyor
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Hydraulic control valve

Fluid handling – Systems – Supply and exhaust
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