Geometrical instruments – Straight-line light ray type
Reexamination Certificate
2005-08-23
2005-08-23
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Straight-line light ray type
C033S286000, C033SDIG002
Reexamination Certificate
active
06931737
ABSTRACT:
A laser level includes a laser light source adapted to emit a laser beam, a beam-splitting unit splitting the laser beam into a number of light beams along multi different directions and a beam-outgoing unit dispersing the number of light beams to form corresponding number of horizontal sector-shaped output beams. These sector-shaped output beams together form an output beam having an angle approximately of 360 degrees.
REFERENCES:
patent: 3771876 (1973-11-01), Ljungdahl
patent: 3897637 (1975-08-01), Genho
patent: 4333242 (1982-06-01), Genho
patent: 4770480 (1988-09-01), Teach
patent: 4852265 (1989-08-01), Rando
patent: 4904081 (1990-02-01), Miyahara
patent: 4912851 (1990-04-01), Rando
patent: 5218770 (1993-06-01), Toga
patent: 5539990 (1996-07-01), Le
patent: 6539638 (2003-04-01), Pelletier
patent: 6598304 (2003-07-01), Akers
patent: 6603546 (2003-08-01), Barbieri et al.
patent: 6618950 (2003-09-01), Huang et al.
patent: 6694629 (2004-02-01), Goodrich
patent: 6792685 (2004-09-01), Ng et al.
patent: 2005/0005462 (2005-01-01), Heger at al.
Asia Optical Co, Inc.
Bennett G. Bradley
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