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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 |
| 4671200 | Sail furling apparatus An apparatus for furling a sail on a sailboat having a mast includes a stay extending between the deck and the mast on the sailboat, a hollow shaft loosely fitted over the stay and supporting the side edge of the sail, the hollow shaft being rotatable abo... | 06/09/1987 |
