A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 3975017 | Tennis racket A tennis racket which exhibits, through a novel combination of critical material characteristics (composition, treatment, weight distribution and, particularly, the dimensions of width and thickness of various interrelated frame elements) optimum strength... | 08/17/1976 |