Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1990-07-13
1991-03-19
Will, Thomas B.
Geometrical instruments
Straight-line light ray type
Structurally installed
124 87, F41G 1467
Patent
active
049999192
ABSTRACT:
An archer's bow pin sight device having a combination of vertical bands and horizontal bands in conjunction with typical sight pins commonly used on bows, so as to provide bracketing lines on either side of sight pins and target or bracketing lines above and below the pin and target or both side and top and bottom.
REFERENCES:
patent: 3136063 (1964-06-01), Stebbins
patent: 3670422 (1972-06-01), Stebbins et al.
patent: 3715807 (1973-02-01), Heffer
patent: 4136462 (1979-01-01), Topel
patent: 4167333 (1979-09-01), Young et al.
patent: 4535747 (1985-08-01), Kudlacek
patent: 4543728 (1985-10-01), Kowalski
de Groot Robert A.
Gratton Stephen A.
Will Thomas B.
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