Slate and method of manufacturing therefor

Details Slate and method of manufacturing therefor Slate and method of manufacturing therefor

1987-03-18

1989-09-12

Friedman, Carl D.

Static structures (e.g., buildings)

Railroad car roof construction

Central discrete ridge member

52316, E04D 100

Patent

active

048647934

ABSTRACT:
A slate and the method of manufacturing therefor comprising substantially a single color mortar cement. The outer surface of the slate has at least two different shapes which produce a different color variation to one another.

REFERENCES:
patent: 1473253 (1923-11-01), Reynolds
patent: 1945004 (1934-01-01), McQuade
patent: 2133854 (1938-10-01), Fischer
patent: 2170534 (1939-08-01), MacNutt
patent: 2200341 (1940-05-01), Rahr
patent: 2513972 (1950-07-01), Stitt
patent: 3091898 (1963-06-01), Fasold et al.
patent: 3616103 (1971-10-01), Greiner
patent: 4262466 (1981-04-01), Roe

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