(from Joerg Hau)
Information about these devices can be found here:
Harald Hoyer's Linux Touch Panel Drivers for the Fujitsu Lifebooks B112/B142/B2130, http://parzelle.de/Linux/Lifebook/. Unfortunately, this is XFree 3.x only and it seems that this information is now "static" (dead?).
Kenan Esau's Lifebook Series B Touchscreen driver, which is the adaptation of Harald's driver to XFree 4.x. http://www.conan.de/lifebook/lifebook.html.
I [Joerg Hau] have used Kenan's driver on my Fujitsu LifeBook B142 (described at http://www.mysunrise.ch/users/joerg.hau/linux/b142.htm), and it works like a charm.