Illumination – Self powered lamp – Cylindrical flashlight casing
Patent
1989-10-31
1991-04-09
Ostrager, Allen M.
Illumination
Self powered lamp
Cylindrical flashlight casing
362207, F21L 700
Patent
active
050069691
ABSTRACT:
A flash-light has a light-shell, a cylinder, a bottom cover which can be screwed to touch the bottom side of the cylinder, thus, the circuit of the bulb can be easily controlled.
REFERENCES:
patent: 3201542 (1965-08-01), Hutchison
patent: 4819141 (1989-04-01), Maglica et al.
Ostrager Allen M.
Plum Industrial Co., Ltd.
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