Highway boundary marker

Details Highway boundary marker Highway boundary marker

1994-11-21

1995-10-03

Word, A. Hugo

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

Patent

active

D03628183

REFERENCES:
patent: D260742 (1981-09-01), Mihailoff
patent: D292894 (1987-11-01), Whitmer et al.
patent: D323999 (1992-02-01), Zeishman
patent: D333278 (1993-02-01), Beyas
patent: D337129 (1993-07-01), Sandy
patent: D337131 (1993-07-01), Wilson
patent: 3851615 (1974-12-01), Grundvig et al.
patent: 4122795 (1978-10-01), Doring
The markers depicted in the "SAFE-HIT" Suggested Price List, especially the marker labeled Type 3, all of which were on sale prior to Nov. 21, 1993.

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