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Inventor: Heist; Kenneth D.
Address: Billings, MT
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4340972 |
Transmitter/receiver teaching apparatus |
July 20, 1982 |
| A teaching apparatus including a transmitter portion, a receiver portion and a prompter portion, each of the portions being disposed in a separate self-contained unit, the transmitter portion being adapted to be worn on the head and including a peripheral band portion and a top connectin |
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