Hexagonal block structural unit

Details Hexagonal block structural unit Hexagonal block structural unit

1987-08-28

1992-06-30

Word, A. Hugo

Building units and construction elements

Architectural stock material

Panel, tile or applique or floor, wall, roof, etc.

Patent

active

D03275434

REFERENCES:
patent: D247082 (1978-01-01), Thompson et al.
patent: 366195 (1887-07-01), Arnold et al.
patent: 369796 (1887-09-01), Kelly
patent: 408369 (1889-08-01), Bell
patent: 801108 (1905-10-01), Romanoff
patent: 853756 (1907-05-01), Betis
patent: 1134578 (1915-04-01), Armstrong
patent: 1418464 (1922-06-01), Praetorius
patent: 2086185 (1937-07-01), Keaney
patent: 2136346 (1938-11-01), Wadman
patent: 2477852 (1949-08-01), Bacon
patent: 3144881 (1964-08-01), Sproull
patent: 3157582 (1964-11-01), Babule et al.
patent: 3899860 (1975-08-01), Newell
patent: 4349293 (1982-09-01), Rosenberger
patent: 4514113 (1985-04-01), Neumann

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