Drainage channel

Details Drainage channel Drainage channel

1987-06-26

1990-12-04

Largen, James R.

Building units and construction elements

Prefabricated unit

Patent

active

D03126960

REFERENCES:
patent: D299543 (1989-01-01), Phillips
patent: 2386020 (1945-10-01), Klendelken
patent: 2436593 (1948-02-01), Moselowitz
patent: 2701027 (1955-02-01), Scoville
patent: 4367142 (1983-01-01), Blecher
patent: 4515498 (1985-05-01), Thomann et al.
patent: 4553874 (1985-11-01), Thomann et al.
patent: 4560302 (1985-12-01), Karbstein
patent: 4621939 (1986-11-01), Thomann et al.
patent: 4630962 (1986-12-01), Thomann et al.
patent: 4640643 (1987-02-01), Williams
Sweet's Catalog File 1981 Sec. 5.19/NE, p. 3.

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