Method for determining visibility, amount of precipitation...

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

Reexamination Certificate

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Details

C356S339000

Reexamination Certificate

active

07122820

ABSTRACT:
The invention is directed to a method and a combined visibility measuring and precipitation measuring instrument for determining visibility, amount of precipitation and type of precipitation.

REFERENCES:
patent: 3745350 (1973-07-01), Hill et al.
patent: 4123665 (1978-10-01), Früngel
patent: 4613938 (1986-09-01), Hansen et al.
patent: 4693602 (1987-09-01), Wyatt et al.
patent: 5373367 (1994-12-01), DeGunther et al.
patent: 5444530 (1995-08-01), Wang
patent: 5604590 (1997-02-01), Cooper et al.
patent: 21 21 088 (1971-12-01), None
patent: 29 16 388 (1979-11-01), None
patent: 0745839 (1996-12-01), None
*English Abstract of DE 29 16 388.
Frank W. Gibson “In situ photometric observations of angular scattering from atospheric aerosols” Applied Optics, Oct. 1988, vol. 15, No. 10, pp. 2520-2533.
Ulrich Tietze, et al. “Halbleiter -Schaltungstechnik” Springer Verlag, 11. Auflage 1999, pp. 1215-1219.

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