The Modicon brand was sold in 1977 to Gould Electronics

Gould purchased ICC in August of 1985

For manuals and schematics, see the Solid State Music Documentation:
https://deramp.com/downloads/mfe_archive/010-S100%20Computers%20and%20Boards/01-Solid%20State%20Music/10-SSM%20S100%20Boards/SSM%20IO4/