Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077155 | Relative-position, absolute-orientation sketch pad and optical stylus for a personal computer | — | 2011-12-13 |
| 7210996 | Questionnaire method of making topic-specific word puzzle documents | Rachel Rehm | 2007-05-01 |
| 6802041 | Multimedia word processor | — | 2004-10-05 |
| 5943883 | Circular knitting machine | Ernst-Dieter Plath, Dietmar Trankle, Gero Schindler, Paul Neher | 1999-08-31 |
| 5740243 | Cryptographic guessing game | — | 1998-04-14 |
| 5667438 | Method of constructing crossword puzzles by computer | — | 1997-09-16 |
| 5479506 | Cryptographic guessing game | — | 1995-12-26 |
| 5338043 | Cryptographic guessing game | — | 1994-08-16 |