Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2011-06-14
2011-06-14
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S319000, C015S339000
Reexamination Certificate
active
07958594
ABSTRACT:
A vacuum cleaning system for use in a structure. System has receiver adapted to receive communication that an appliance has been activated, and a control circuit adapted to control the central vacuum cleaning system upon receipt of a communication at the receiver that the appliance has been activated. Example appliances include doorbell, telephone or ERV. System may have a communication module that communicates with corresponding appliance communication module. The system communication module may transmit communications to the appliance communication module. Alternatively, the appliance communication module may transmit communications to the system communications module. The modules may both receive and transmit. Preferably, communications between modules are radio frequency (RF) wireless, however wired communications, where wiring is possible or available, are also suitable.
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Cube Investments Limited
Dowell & Dowell , P.C.
Redding David A
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