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A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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| Number | Title | Issue Date |
| 4232794 | Automatic car coupler A car coupler includes first and second complementary coupling members which are respectively attached to cars by means of drop pins about which the coupling members can rotate horizontally. The first coupling member (female) includes an elongated couplin... | 11/11/1980 |
