Static structures (e.g. – buildings) – Opaque stonelike module – Lateral retaining feature on facing sheet
Patent
1976-11-19
1980-06-03
Epstein, Henry F.
Static structures (e.g., buildings)
Opaque stonelike module
Lateral retaining feature on facing sheet
428 49, 428192, 428900, E04C 110
Patent
active
042055008
ABSTRACT:
Interlocking wear-resistant tile are provided with rotatable tongue and groove mating edges. In preferred embodiments two adjacent edges of each tile are tongues and two other adjacent edges grooves.
REFERENCES:
patent: 229766 (1880-07-01), Smith
patent: 1365162 (1921-01-01), Ferguson
patent: 1705338 (1929-03-01), Playford
patent: 1984393 (1934-12-01), Brown
patent: 2155026 (1939-04-01), Tracy
patent: 4073318 (1978-02-01), Close et al.
Hensley William G.
Snyder Paul E.
Alexander Cruzan
Epstein Henry F.
Minnesota Mining and Manufacturing Company
Okubo Edward T.
Sell Donald M.
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