Class 181/181 - With vibratory filaments

Subclass of Class 181 - Acoustics
Definition: Subject matter including thin wires which are attached to
No. of patents: 4
Last issue date: 10/09/2007

Number	Title	Issue Date
7278513	Internal lens system for loudspeaker waveguides This invention provides a lens system for a loudspeaker. The loudspeaker may include a driver unit and a waveguide attached to the driver unit. The loudspeaker further may include a lens system. The lens system may include a plurality of plates. The plates may be po...	10/09/2007
7259308	Acoustic guitar resonator A resonator assembly includes a resonator, a collector-amplifier, as well as a timbre tray, one or more timbre pieces, and a detector holder. The resonator assembly, designed to be attachable to a conventional acoustic guitar, improves the quality and volume of the ...	08/21/2007
5302310	Detergent compositions containing a carbonate builder, a seed crystal and an immobilized sequestrant A cleaning composition comprises an alkali metal carbonate detergency builder with a seed crystal material therefor and a heavy metal seqestrant. To avoid deleterious interactions with the seed crystal material, the sequestrant is imobilised on a high sur...	04/12/1994
5170436	Acoustic speaker system An acoustic loudspeaker cabinet enclosure has a woofer and a tweeter mounted on a front wall and a tuned port with a duct extending into the interior of the cabinet. A pair of tuned baffles are mounted within the cabinet, one of the baffles being secured ...	12/08/1992

PatentStorm