Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1975-11-24
1977-04-12
Aegerter, Richard E.
Geometrical instruments
Straight-line light ray type
Multisight line
33255, 33258, 33261, F41G 106, F41G 110, F41G 148
Patent
active
040166520
ABSTRACT:
Sighting system for hand held grenade launchers including a rear leaf sight aving two sets of range indicia markings. A first front sight is spaced from the leaf sight for short to intermediate sighting alignment with one set of rear sight markings and a second front sight is offset from the first sight and spaced from the leaf sight for intermediate to long range sighting alignment with the other set.
REFERENCES:
patent: 659606 (1900-10-01), Formby
patent: 766658 (1904-08-01), Beal
patent: 799206 (1905-09-01), Thring
patent: 1406620 (1922-02-01), Dear
Aegerter Richard E.
Card, Jr. Harold H.
Edelberg Nathan
Richardson Robert O.
Stearns Richard R.
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