Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1990-11-30
1991-09-10
Word, A. Hugo
Building units and construction elements
Architectural stock material
Construction block or brick type
D25113
Patent
active
D03198855
REFERENCES:
patent: D21522 (1892-05-01), Lewis
patent: D36805 (1904-02-01), Palmer
patent: D249558 (1978-09-01), Blomquist
patent: 415773 (1889-11-01), Fiske
patent: 2629135 (1953-02-01), Johnson
patent: 2847848 (1958-08-01), Grants
Audel's Mason's & Builder's Guide .COPYRGT.1924 pp. 954, 956, 959, 961, 962 vol. 4.
Blomquist Peter J.
Woolford Michael E.
Clark Doris
Kiltie Corporation
Word A. Hugo
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