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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 5537615 | Production of an image model and inspection of a pixel representation of an image A method of inspecting a pixel for tolerable variation from a corresponding selected pixel in a master image comprises establishing a data word of which the bits each indicate whether or not all the master image pixels in the neighborhood of the selected ... | 07/16/1996 |
| 5255331 | Production of an image model and inspection of a pixel representation of an image A method of inspecting a pixel for tolerable variation from a corresponding selected pixel in a master image comprises establishing a data word of which the bits each indicate whether or not all the master image pixels in the neighborhood of the selected ... | 10/19/1993 |
| 4825761 | Control system for printing machines, especially numbering machines A printing machine which has a printing cylinder (1) having automatically incremented numbering barrels (2) includes drive means (40-45) which normally maintain the printing cylinder in speed and phase synchronization with a train of documents on a web (1... | 05/02/1989 |
| 4370057 | Method of verification of a sheet element, such as a banknote A sheet element, such as a banknote, has an incorporated authenticating device comprising a film having at least one edge which is provided with a non-rectilinear portion or portions shaped to provide coded information relating to the sheet element. The s... | 01/25/1983 |
| 4186943 | Security devices A sheet element, such as a banknote or other document of intrinsic value, incorporating an optical authenticating device comprising a thin film element, preferably in the form of a strip, or thread disposed within the thickness of the sheet element and ha... | 02/05/1980 |
