I'm doing a research project on trombone valves for a college fellowship, I'm trying to find every, if not most trombone valves that have been made. I plan on sending the manufacturers emails asking for information about each valve.
This is the list I have compiled so far, does anyone have anything more they know of?

Thayer
Hagmann
Traditional rotary
Rotax
Greenhoe
Shires TruBore
Conn CL
Holton Monster Valve
Bach K Valve
Minick Valve
Laetszch free flow valve
Meinlschmidt radial flow valve
Bach Radial Flow valve
Kanstul CR F attachment valve
Piston Valve