Electrical audio signal processing systems and devices – Sound or noise masking
Reexamination Certificate
2005-09-27
2005-09-27
Lee, Ping (Department: 2644)
Electrical audio signal processing systems and devices
Sound or noise masking
C381S082000
Reexamination Certificate
active
06950526
ABSTRACT:
The new speaker system includes masking capabilities, as well as optional paging capabilities and has a speaker mounted so as to be upwardly directed on a support plate or rack within a ceiling plenum, with an optional low profile backbox. An optional paging speaker is mounted within the backbox downwardly facing on the support rack.
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Brandau Rebecca J.
Husch & Eppenberger LLC
Lee Ping
Lowell Manufacturing Company
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