Geometrical instruments – Straight-line light ray type – Rod or target
Patent
1989-04-04
1990-11-20
Haroian, Harry N.
Geometrical instruments
Straight-line light ray type
Rod or target
52103, G01C 1502
Patent
active
049707957
ABSTRACT:
A surveyor's marker includes an elongated body portion tapered in an axial direction from a head portion to a generally pointed tip. The head portion has a cruxiform configuration enabling it to be used in a cross-hair's sense and seen at a substantial distance. The device is integrally molded such as by injection molding from a brightly colored and relatively stiff and inexpensive plastic.
REFERENCES:
patent: D3713 (1869-10-01), Bassett
patent: D3790 (1869-12-01), Bassett
patent: D46669 (1914-11-01), Gorsuch
patent: D175680 (1955-09-01), Glasgow
patent: D260974 (1981-09-01), Lesser
patent: 1902875 (1933-03-01), Mason
patent: 2154966 (1939-04-01), Vanderveer
patent: 2773470 (1956-12-01), Alger
patent: 3754360 (1973-08-01), Herr
patent: 3851484 (1974-12-01), Steding
patent: 4185424 (1980-01-01), Streit
patent: 4433490 (1984-02-01), Black
patent: 4738060 (1988-04-01), Marthaler
Kleese James M.
Woodward Thomas F.
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