Robert C. Proebstel has been granted 8 US patents while listed as an inventor at Tektronix. The first was granted in 1992 and the most recent in August 2025. Robert C. Proebstel ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Robert C. Proebstel in Goleta, CA, US.