Illumination – Automatic substitution of power supply or light source
Reexamination Certificate
2005-02-01
2005-02-01
Husar, Stephen F. (Department: 2875)
Illumination
Automatic substitution of power supply or light source
C362S259000, C362S362000, C362S370000, C362S812000, C040S570000
Reexamination Certificate
active
06848798
ABSTRACT:
An emergency lighting fixture combining the functions of an illuminated sign such as an exit sign and an emergency lighting unit integrated into one housing onto which one or more emergency lights can be mounted at predetermined locations of the housing, the combined emergency lighting structure providing both exit location information and ambient emergency lighting in a single cooperatively operating device.
REFERENCES:
patent: 1469946 (1923-10-01), Morrison
patent: 5768814 (1998-06-01), Kozek et al.
patent: 5797673 (1998-08-01), Logan et al.
patent: 6142648 (2000-11-01), Logan et al.
patent: 6499866 (2002-12-01), Logan et al.
Hull Edwin Lewis
Logan Mark Campbell
Masters Andrew Edward
Acuity Brands Inc.
Darnell Kenneth E.
Husar Stephen F.
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