Paving stone

Details Paving stone Paving stone

1998-08-20

2000-08-08

Zarfas, Louis S.

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D04293436

REFERENCES:
patent: D352559 (1994-11-01), Krueger et al.
patent: D393727 (1998-04-01), Wiegand, Jr.
patent: D397802 (1998-09-01), Terry
patent: 768698 (1904-08-01), Schutte
patent: 2184601 (1939-12-01), Konopicky
patent: 3494266 (1970-02-01), Baumberger
patent: 3602111 (1971-08-01), Clemente
patent: 3931700 (1976-01-01), Scanni et al.
patent: 4761095 (1988-08-01), Bartlechner
patent: 4919565 (1990-04-01), Gopfert
"Kobbelstone Circle" stones, Krehling Industries, Inc. Sweet's General Building & Renovation Catalog File, 1993.

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