Tektronix first patent, 2752527, was awarded on June 26, 1956 to Richard L. Ropiquet for Method of Magnifying Waveforms on a CRT and Circuit Therefor.  vintageTEK has assembled a complete listing of all patents awarded to Tektronix up until 2010 organized several different ways.

1956-2010 Tektronix Patents lists patents in assigned order

1956-2010 Patents By Name lists number of patents organized by inventor

1956-2010 Patents By Number lists by inventor organized by number of patents

1956-2010 Japan Utility Model is a list of Japan inventions of which there is no corresponding US patent

1956-2010 Non-Tektronix Inventors lists patents with both Tektronix and non-Tektronix inventors