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| Patents for Robert J. Holmen | |||||
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| Number | Date | Patentee | Title | Type | |
| D335,093 | Apr. 27, 1993 | C.F. Govekar, M.C. Putrow, D.R. Ellingen, T.J. Green, T.J. Caron, L.D. Pacetti, R.J. Holmen | Digital Oscilloscope | ||
| 5,250,896 | Oct. 05, 1993 | J.E. Stanley, R.D. Johnson, R.J. Holmen, D. Mieczkowski | Hand-Held Magnetic Contact Tachometer with Toothed Rotatable Wheel | ||