Baths – closets – sinks – and spittoons – Dry closets – With heating meas
Patent
1976-12-22
1978-08-15
Perham, Alfred C.
Baths, closets, sinks, and spittoons
Dry closets
With heating meas
52 29, E04H 319
Patent
active
041061349
ABSTRACT:
Lifting floor for swimming pool comprising a height adjustable selfsupporting plate which is carried by lifting columns extending substantially the whole height of the swimming pool, the lifting columns being formed as supporting columns of corrosion resistant material resting on the pool bottom, braced against tipping inwardly by the lifting floor and against tipping outwardly by directly supporting against the pool walls, and passing through holes in the lifting floor.
REFERENCES:
patent: 3052893 (1962-09-01), McClure
Rupprath Hans Friedrich
Schiron Klaus
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