Permanent athletic field marker

Details Permanent athletic field marker Permanent athletic field marker

1977-03-14

1978-08-01

Pinkham, Richard C.

Undertaking

273 31, 404 12, A63C 1906

Patent

active

041038860

ABSTRACT:
An improved permanent athletic boundary marking device which is characterized by a novel construction which includes an elongated base strip of flexible material provided with a plurality of spaced, integrally-formed and vertically extending projections. The base strip is adapted to be buried underground such that only the relatively closely spaced tips of the projections are visible to indicate the particular boundary marker used on athletic fields.

REFERENCES:
patent: 391660 (1888-10-01), Thayer
patent: 1193571 (1916-08-01), Lord
patent: 1885941 (1932-11-01), O'Brien
patent: 2196601 (1940-04-01), Behr
patent: 3233893 (1966-02-01), Meyer
patent: 3350092 (1967-10-01), Maki
patent: 3541726 (1970-11-01), Raschke, Jr.
patent: 3995079 (1976-11-01), Haas, Jr.
patent: 4044179 (1977-08-01), Hass, Jr.

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