Electric heating – Metal heating – By arc
Reexamination Certificate
2005-08-02
2005-08-02
Elve, M. Alexandra (Department: 1725)
Electric heating
Metal heating
By arc
C219S121830
Reexamination Certificate
active
06924458
ABSTRACT:
An auxiliary focusing tool for a laser marker for adjusting a distance between a laser focal lens and a work piece before laser marking, the tool comprises: a holding member provided on the laser marker, and a collapsible measuring kit provided on the laser marker at an outputting position of a light source, the measuring kit and the holding member get a predetermined length and are perpendicular to a working surface on the work piece after they are stretched out; and the measuring kit is collapsible to be received in the holding member when it is stored.
REFERENCES:
patent: 5837962 (1998-11-01), Overbeck
patent: 2002/0057481 (2002-05-01), Souda et al.
patent: 2004/0104202 (2004-06-01), Downes et al.
patent: 2004/0159641 (2004-08-01), Kaplan et al.
Dennison Schultz Dougherty & MacDonald
Elve M. Alexandra
Great Computer Corp.
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