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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 |
| 4997315 | Crib walls A method for making a corner and a corner formed thereby for a crib wall having a setback includes preparing a base for the two walls to provide the required setback of each wall, laying on the base the wall headers and a corner header of the tier, laying... | 03/05/1991 |
