Liquid level measurement

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Reexamination Certificate

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Details

C356S624000, C073S293000

Reexamination Certificate

active

11130606

ABSTRACT:
The present application relates to an apparatus and method for measuring liquid levels in small-volume wells.

REFERENCES:
patent: 5880364 (1999-03-01), Dam
patent: 6443022 (2002-09-01), Gordon
patent: 2003/0038950 (2003-02-01), Spolaczyk
patent: 2004/0022689 (2004-02-01), Wulf et al.
patent: 0 615 607 (1994-09-01), None
patent: 0 842 441 (2002-04-01), None
patent: 2001-90733 (2001-04-01), None
International Search Report from Int'l application No. PCT/US2005/023435, mailed Nov. 4, 2005; along with Written Opinion of the ISA.
High-Accuracy Surface Scanning Method, 10 page brochure for new Surface Scanning Laser Confocal Displacement Meter, Keyence Corporation of America, Woodcliff Lake, NJ, www.keyence.com, 2004.
Laser Confocal Displacement Meters, LT Series, pp. 398-405, Keyence Corporation of America, Woodcliff Lake, NJ, www.keyence.com.
Laser Confocal Displacement Meter, LT Series, Instruction Manual, pp. i-59, Keyence Corporation, www.keyence.com.

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