Plural load device systems > Electric switch in the supply circuit > Three or more controlled load device circuits > Group control systems > Four or more groups > Patents

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Class Information
Number: 315/319
Name: Electric lamp and discharge devices: systems > Plural load device systems > Electric switch in the supply circuit > Three or more controlled load device circuits > Group control systems > Four or more groups
Description: Systems wherein the switch means is provided with at least four different circuit closing positions, the switch means being connected in the circuit so as to complete the circuit from the source of supply to a group of load device circuits in each of its circuit closing positions, each of the groups containing a different combination of load devices from that of each of the other groups.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7573372	Multiple channel ballast and networkable topology and system including power line carrier applications	Aug. 11, 2009
7525258	Current balancing techniques for fluorescent lamps	Apr. 28, 2009
7413845	Elimination of write head plating defects using high activation chemically amplified resist	Aug. 19, 2008
5146139	Controllable gas discharge lighting system	Sep. 8, 1992
5003233	Radio frequency powered large scale display	Mar. 26, 1991
4992705	Fluorescent lighting system	Feb. 12, 1991
4888526	Operating system for sun tanning apparatus	Dec. 19, 1989
4792731	Multi-room controlled for individual light controls	Dec. 20, 1988
4181844	Theatre lighting control system	Jan. 1, 1980