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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 |
| 4227259 | Circuit for use in remote control of a signal receiver A control circuit for controlling selected functions in a signal receiver, such as a television receiver, in response either to remotely generated control signals of different selected frequencies or to manual controls which are provided on the signal rec... | 10/07/1980 |
| 4227260 | Electronic active star element for an optical data transmission system In order to more efficiently transmit optical data on an optical data bus to a number of members of an optical data transmission community, an electronic active star element which receives signals from each of a plurality of remote terminals, converts the... | 10/07/1980 |
| 4227261 | Transmission of information by sweeping fan-shaped beams Fan-shaped beams, sweeping angularly, substantially flatwise, across a solid angle space having the beam emitter at its apex, are modulated for transmission of special information to a selected one of a plurality of identically equipped bodies in that spa... | 10/07/1980 |
