Paving stone

Details Paving stone Paving stone

1997-08-22

2000-12-05

Zarfas, Louis S.

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D04348575

REFERENCES:
patent: D262742 (1982-01-01), Vesterholt
patent: D314240 (1991-01-01), Scheiwiller
patent: D317207 (1991-05-01), Scheiwiller
patent: D317208 (1991-05-01), Scheiwiller
patent: 1439446 (1922-12-01), Regan
patent: 3873225 (1975-03-01), Jakobsen et al.
patent: 4627764 (1986-12-01), Scheiwiller
patent: 5133620 (1992-07-01), Scheiwiller
patent: 5230584 (1993-07-01), Grossman
patent: 5267810 (1993-12-01), Johnson
patent: 5503498 (1996-04-01), Scheiwiller
patent: 5560173 (1996-10-01), Scheiwiller

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