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| Number | Title | Issue Date |
| 5233547 | Electronic checking account apparatus and method having a digitizer to receive information as a check is being written An electronic checkbook and method for using it. The checkbook comprises upper and lower parts which fold together when not in use. The lower part receives on its upper surface a booklet of checks. A digitizer is hingedly connected or fixed to the remaind... | 08/03/1993 |
| 4775983 | High speed logic analyzer A system for transmitting data characters from a communication channel to a datascope for displaying the data characters on a CRT screen includes a plurality of switch members settable to a position for identifying a predetermined source of the data messa... | 10/04/1988 |
