Method and apparatus for forming building foundations

Plastic and nonmetallic article shaping or treating: processes – Forming structural installations in situ – Sequentially molding in situ different portions or layers on...

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Details

52293, 249 34, 264293, E04B 154

Patent

active

041861604

ABSTRACT:
A method for forming three parallel elongate grooves of predetermined size and spacing in a hardenable building material during a plastic state thereof, for forming a perimeter-type building foundation.

REFERENCES:
patent: 2091552 (1937-08-01), MaCauley
patent: 2099077 (1937-11-01), Pessagno
patent: 2332166 (1943-10-01), Reiner
patent: 2490228 (1949-12-01), Pontierre
patent: 2722040 (1955-11-01), Ludowici
patent: 2899735 (1959-08-01), Graef
patent: 2973567 (1961-03-01), Brow
patent: 3722849 (1973-03-01), Luyben
patent: 3778020 (1973-12-01), Burrows

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