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Class Information
Number: 381/76
Name: Electrical audio signal processing systems and devices > Lecterns
Description: Subject matter having an enclosure in the form of a reading desk.

Patents under this class:

Patent Number Title Of Patent Date Issued
7424119 Voice matching system for audio transducers Sep. 9, 2008
5280543 Acoustic apparatus and driving apparatus constituting the same Jan. 18, 1994
5181251 Amplifier unit Jan. 19, 1993
5115470 Sound reinforcement system May. 19, 1992
4166926 Portable lectern and voice amplifier Sep. 4, 1979
4052561 Lectern with detent-hinged shelf for portable sound system Oct. 4, 1977
3999014 Padded furniture for reverent atmosphere Dec. 21, 1976
3972603 Automatic prompter Aug. 3, 1976

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