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| Number | Title | Issue Date |
| 7335120 | String tension identification device and method A racquet string tension identification device and method for mounting on a stringed racquet utilizing a color coding system to denote the original string tension range in tens of pounds and having nine indicia areas with the number of additional pounds of tension t... | 02/26/2008 |
| 5573405 | Behavior monitoring and training device A behavoir training and modification device includes a board having a plurality of pegs extending from its front face. The pegs are arranged in a predetermined pattern such as a grid of rows and columns. Indicator plates can be marked with visual indicia ... | 11/12/1996 |
| 4941688 | Periodic event recorder A period event recorder comprising a label, indicia on the label corresponding to a desired time or frequency interval; a porous substrate attached to the underside of the label; means for attaching the porous substrate to an object associated with, relat... | 07/17/1990 |
| 4745875 | Golfing score recorder A golfing scores recorder consists of a generally rectangular case having a plurality of openings formed in a predetermined pattern provided in its front panel and a plurality of depressions of the same pattern formed in the inner surface of its rear pane... | 05/24/1988 |
