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Inventor: Carrell; Edwin A.
Address: Georgetown, TX
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| RE33146 |
Occupancy responsive temperature control system |
January 16, 1990 |
| A room temperature control system includes a transmitter-receiver unit for producing an acoustic standing wave pattern in a room and for producing a signal when that pattern is disturbed by motion in the room. A logic circuit provides timing signals and interprets a pattern disturbance |
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