Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1991-12-06
1993-11-09
Word, A. Hugo
Building units and construction elements
Architectural stock material
Construction block or brick type
Patent
active
D03412156
REFERENCES:
patent: D249558 (1978-09-01), Blomqvist
patent: D295788 (1988-05-01), Forsberg
patent: D319885 (1991-09-01), Blomquist et al.
patent: D321060 (1991-10-01), Blomquist et al.
patent: 1795451 (1931-03-01), Sharpe
patent: 4860505 (1989-08-01), Bender
Technical Data Sheet-Published by Anchor/Oscar Roberts Concrete Products Co., "Diamond Wall Systems", dated Sep. 1988, pp. 1 and 2.
Blomquist Peter J.
Strand Todd P.
Clark Doris
Kiltie Corporation
Word A. Hugo
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