Concrete construction block

Details Concrete construction block Concrete construction block

2000-02-01

2001-04-03

Zarfas, Louis S. (Department: 2914)

Building units and construction elements

Architectural stock material

Construction block or brick type

CD25S118000

Design Patent

active

D0439989

CLAIM:
The ornamental design for concrete construction block, as shown and described.

REFERENCES:
patent: D. 192734 (1962-05-01), Terry
patent: D. 408930 (1999-04-01), Behunin
patent: 1287055 (1918-12-01), Lehman
patent: 1789400 (1931-01-01), Brozek
patent: 2137153 (1938-11-01), Brozek
patent: 2184682 (1939-12-01), Sentrop
patent: 2313363 (1943-03-01), Schmitt
patent: 3060542 (1962-10-01), Martin
patent: 3739541 (1973-06-01), Andrews

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