Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6107996 | Integrated keyboard and pointing device system with automatic mode change A computer system employs a keyboard that includes an integrated pointing device coupled to a pointing key. The system has a typing mode of operation and a pointing mode of operation. In the pointing mode, the pointing key is used to enter pointing inform... | 08/22/2000 |
| 5701142 | Pointing stick with tripod actuator for cursor control in a computer keyboard Pointing stick assembly for use in a computer keyboard for cursor control is disclosed. The assembly includes a pointing button coupled through a plurality of rigid actuator legs to force sensors. For pointing operations, the pointing button is pressed in... | 12/23/1997 |
| 5583303 | Transducer array A pressure sensitive transducer array in which a plurality of transducers are connected in series and in parallel with one another. In one embodiment, a resistive layer is formed from carbon or silver ink on a polyester film. A plurality of conductive shu... | 12/10/1996 |
| 5578765 | Transducer array A pressure sensitive transducer array in which a plurality of transducers are connected in series and in parallel with one another. In one embodiment, a resistive layer is formed from carbon or silver ink on a polyester film. A plurality of conductive shu... | 11/26/1996 |
| 5568987 | Pointing stick in a computer keyboard for cursor control Apparatus for use in a computer keyboard for cursor control is disclosed. The apparatus includes a compound key which serves for both typing a character and for pointing operations, i.e. for cursor control like a mouse. For pointing operations, a pointing... | 10/29/1996 |
| 5541622 | Miniature isometric joystick A miniature isometric joystick is disclosed for receiving manual user input to effect directional control such as controlling cursor movement on a computer display screen or controlling movement of an apparatus such as a machine or robot. The joystick is ... | 07/30/1996 |
| 5499041 | Keyboard integrated pointing device A keyswitch-integrated pointing assembly in which a plurality of substantially planar force sensing elements are disposed on a planar surface adjacent a keyswitch on a keyboard. The keyswitch includes a plunger which extends downwardly from a key cap for ... | 03/12/1996 |