John Addis

John Addis is an engineer who worked for Tektronix (now retired).

Tek products

designed the 1A7 (not the 1A7A, which was designed by Thor Hallen and is electrically similar to the 7A22). The 1A7 was Addis' first design at Tektronix.
designed the 7A11 amplifier
designed the 067-0681-01 pulse generator / calibration fixture
designed the 155-0078-xx (M84) amplifier chip
with Wink Gross, co-designed the vertical amplifier for the 485 (Ref 1)
responsible for vertical system in the 7104
with Wink Gross, co-designed the hybrid amplifiers for the 7104 (Ref 1)
M377 preamplifier IC for 11000-series scopes (Ref 2, Ref 1)

3582807 Amplifier Gain Control Circuit Including Diode Bridge
3710270 Linear Gain Control
3906344 Oscilloscope having selectable input impedances
US Patent 4,132,958 Feedbeside correction circuit for an amplifier
4390852 Buffer Amplifier
4551636 Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output
4647889 Rotary control having variable detents
4667146 Voltage-controlled push-pull current source
4704558 Method and apparatus for automatic oscilloscope calibration
4713627 Active filter with bootstrapping
4714896 Precision differential amplifier having fast overdrive recovery
4725790 Broadband DC level shift circuit with feedback
4731588 Gain selectable amplifier with resonance compensation
4731693 Connection apparatus for integrated circuit
5075636 Differential amplifier with fast overdrive recovery

John Addis, Good Engineering and Fast Vertical Amplifiers, in Jim Williams (Ed.), Analog Circuit Design: Art, Science and Personalities (1991), p.114 (Ref 1)
P.Starič, E. Margan: Wideband Amplifiers (Ref. 2)
A Tektronix oscilloscope that moved faster than light? The Oregonian, 23 Sep 2011. (Original no longer accessible, link via archive.org.), and the paper referred to in that article, Kirk T. McDonald, Radiation from a Superluminal Source