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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 |
| 6618556 | Chemically resistant pinhole camera A multiple axis pinhole camera has a base, a sidewall, a detachable cover, an inner surface, an outer surface, a support for holding a photographic material and at least one aperture. The pinhole camera is constructed from a paint can. The detachable cove... | 09/09/2003 |
| 4117501 | Box camera and photographic kit In a box camera having a front body portion and removable first and second rear body portions. The first rear body portion is removably mounted on the front body portion to focus the camera. After the camera has been focussed, the second rear body portion... | 09/26/1978 |
