Static structures (e.g. – buildings) – Specified wear or friction-type traffic-carrying surface
Patent
1990-02-01
1992-08-18
Murtagh, John E.
Static structures (e.g., buildings)
Specified wear or friction-type traffic-carrying surface
52664, 52777, 454187, E04C 139, E04B 170
Patent
active
051388073
ABSTRACT:
A floor panel having a substantially planar upper tread surface comprises a cast grating having
REFERENCES:
patent: 3003055 (1961-10-01), Liberman
patent: 3057271 (1962-10-01), Butler
patent: 3367257 (1968-02-01), Raider
patent: 3503166 (1970-09-01), Nakazawa
patent: 4622792 (1986-11-01), Betts
patent: 4693173 (1987-09-01), Saiki
patent: 4699640 (1987-10-01), Kouki
patent: 4897299 (1990-01-01), Kawachi
United Kingdom printed application 2136472A, Sep. 19, 1984.
PCT published application WO86/05228, Sep. 12, 1986.
Daw Terry L.
Procter David F.
DAW Technologies, Inc.
Murtagh John E.
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