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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 |
| 7408838 | Digitizing planimeter A planimeter includes a movable housing in which are mounted orthogonally aimed x- and y-position sensors. Each position sensor comprises a piezoelectric ultrasound transmitter and receiver for sending ultrasound to a reflector disposed on a drawing and sensing resu... | 08/05/2008 |
| 6644814 | LED-illumination-type DMD projector and optical system thereof A DMD projector of small size, lightweight and long life, which employs LED arrays as a light source for brighter screen. According to the projector, projection light from sets of a LED array, a first fly-eye lens appressed thereto, and a second fly-eye l... | 11/11/2003 |
| 6513257 | Method and apparatus for determining scale in photographic images An apparatus and method for determining scale in captured images is disclosed. The apparatus includes a rectangular and generally flat frame device for determining scale in captured image. The frame has measurement indicia located along the inside edges a... | 02/04/2003 |
| 5990809 | Underwater surveying system The hydrography of a land area beneath a shallow body of water is determined by driving a submersible, remotely controlled, powered vehicle along a route over the land area. The vehicle includes a chassis, a drive mechanism, a drive control module to cont... | 11/23/1999 |
| 4754103 | X-Y position indicator for a display system An X-Y position indicator control for manual movement over any surface to move a cursor over a display on a cathode ray tube, the indicator control generating signals indicating its position to cause a cursor to be displayed on the tube at the correspondi... | 06/28/1988 |
| 4617740 | Measuring device for a figure A measuring device for measuring characteristics of a drawing in which a carriage is supported by a pair of wheels for reciprocal motion on a line. A carriage pulse generator produces pulses proportional to the angle of rotation of the wheels rotatably su... | 10/21/1986 |
| 4616419 | Measuring device for a figure A measuring device to measure a figure in which a measuring lever is pivotally attached to a carriage supported on a pair of wheels for reciprocal movement. A locking device pivotally mounted on the carriage prevents movement of the measuring lever. Relea... | 10/14/1986 |
