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| Number | Title | Issue Date |
| 5192152 | Switch actuator An automatic switch actuator is disclosed which may be used to test press-to-actuate type switches--for example, the key actuated switches of a computer keyboard. In the illustrated embodiment of the invention, a system of electrically operated valves are... | 03/09/1993 |
| 4543000 | Latching actuator A keyboard actuator for actuating the keys of a keyboard-operated apparatus including a plurality of fluid latching actuators supported to controllably and selectively actuate a key. In the preferred embodiment, each fluid actuator includes a latch and a ... | 09/24/1985 |
| 4441833 | Keyboard actuator A keyboard actuator for actuating the keys of a keyboard-operated apparatus including a plurality of fluid actuators supported by a frame, a first plurality of fluid conduits in communication with one or more selected fluid actuators, and first and second... | 04/10/1984 |
