Bizarre Patents
Mouthguard made at least partially from an edible candy
A mouthguard includes a U-shaped upper bite plate which removably fits over upper teeth of a person, with the entire upper bite plate being made from a soft, deformable and edible gummi candy.
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| Number | Title | Issue Date |
| 4458813 | Housing for a video cassette playback machine A housing is provided for encasing a video cassette playback machine with selected portions of the machine being accessible through relatively small access openings in the housing to permit restricted operation of the machine. The housing comprises an imp... | 07/10/1984 |
| 4265558 | Differential key lock mechanism for justifying text writing composing machine A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic just... | 05/05/1981 |
| 4185400 | Typewriter with instructional apparatus A typewriter and the like utilized as an instructional aid device has control means for teaching alphabetical letter recognition, the sequence of letters in forming words and the association of a word to the picture of an object. A coded card, the preferr... | 01/29/1980 |
| 4140883 | Keyboard with selective key entry block Particular keys are provided with locking arms that may or may not enter a duct filled with balls and being displaceable in the duct only if a locking element is not inserted. That element will be inserted when keys having said locking arms must not be de... | 02/20/1979 |
| 4003459 | Writing machines A key operated manual writing machine including a writing instrument which inscribes letters on the paper, the instrument being controlled by pairs of cams, each pair coupled to one of the manual keys. The two cams control movements of the pen or instrume... | 01/18/1977 |
