Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1979-01-22
1980-09-23
Stephan, Steven L.
Geometrical instruments
Straight-line light ray type
Structurally installed
F41G 100, F41G 1100
Patent
active
042234468
ABSTRACT:
Lead sight apparatus for shotguns is disclosed which comprises a pair of rings of a predetermined diameter spaced apart a predetermined distance from the barrel of a shotgun and extending outwardly from the shotgun barrel.
REFERENCES:
patent: 2092356 (1937-09-01), Prather
patent: 2458638 (1949-01-01), Pretzer
patent: 2730806 (1956-01-01), Williams et al.
patent: 4112583 (1978-09-01), Castilla
Shields H. Gordon
Stephan Steven L.
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