Robert Joseph Johnson

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Inver Grove Heights, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Planar touch panel
- Patent number 4,467,151
- Issue date Aug 21, 1984
- Control Data Corporation
- Robert J. Johnson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Membrane-type touch panel
- Patent number 4,085,302
- Issue date Apr 18, 1978
- Control Data Corporation
- George Edward Zenk
- G06 - COMPUTING CALCULATING COUNTING