Geometrical instruments – Straight-line light ray type – Alignment device
Reexamination Certificate
2007-11-20
2007-11-20
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Straight-line light ray type
Alignment device
C033SDIG021
Reexamination Certificate
active
11457017
ABSTRACT:
A light detector which includes a housing having front and rear walls, a light receiving section disposed on the front wall, and displays disposed on the front and rear walls for showing the location of received light relative on the light receiving section. Also disclosed is a laser level including a motor, a shaft driven by the motor, a housing fixedly disposed on the shaft, the housing having a bore therein, a barrel, and a screw disposed on the housing and contracting the barrel for adjusting the pivotal position of the barrel.
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Brelsford Allen
El-Katcha Karim
McCracken Robert E.
Reeve William R.
Watts Fred S.
Bennett G. Bradley
Black and Decker
Edell Shapiro & Finnan LLC
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