Static structures (e.g. – buildings) – Specified wear or friction-type traffic-carrying surface – Perforate structure having twisted element or particular...
Patent
1977-01-13
1978-05-09
Purser, Ernest R.
Static structures (e.g., buildings)
Specified wear or friction-type traffic-carrying surface
Perforate structure having twisted element or particular...
52181, 52581, 52591, B44D 508
Patent
active
040879488
ABSTRACT:
A flooring element having a moulded body and a partially raised surface which is of a material having a relatively high coefficient of friction, preferably the elements are provided with interlocking lugs so that a floor covering can be built up from a number of them.
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patent: 729923 (1903-06-01), Ellis
patent: 1409125 (1922-03-01), Stanwood
patent: 3846945 (1974-11-01), Roby
patent: 3909996 (1975-10-01), Ettlinger, Jr. et al.
patent: 3913291 (1975-10-01), Dulien et al.
The Condensed Chemical Dictionary, 8th Edition, G. Hawley, 1971, p. 711.
Drucker William Anthony
Ferodo Limited
Friedman Carl D.
Purser Ernest R.
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