Pool block

Details Pool block Pool block

1998-01-29

1999-06-22

Zarfas, Louis S.

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D04113144

REFERENCES:
patent: D94281 (1935-01-01), Rocic
patent: D245878 (1977-09-01), Morrison
patent: 306251 (1884-10-01), Hayden
patent: D329297 (1992-09-01), Smith
patent: D330259 (1992-10-01), Nemchock
patent: 2031950 (1936-02-01), Harshberger
patent: 3104834 (1963-09-01), Lipscomb
patent: 3129895 (1964-04-01), Franck
patent: 5702208 (1997-12-01), Hilfiker et al.

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