Patent
1975-04-18
1976-10-12
Spar, Robert J.
52749, 214 1D, B60P 314, E04H 104
Patent
active
039852377
ABSTRACT:
A device to raise and lower box-shaped construction elements with the elements having at least three openings in the floor; the device including lifting cylinders designed to pass through the openings, a lifting plate mounted perpendicular to the cylinder walls and an inclined plate designed to support the construction elements.
REFERENCES:
patent: 3929241 (1975-12-01), Putnam
Abraham George F.
Spar Robert J.
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