Inventor
SCHRUM ALLAN E
US13 patents
⚠️ This page may combine multiple inventors who share the name “SCHRUM ALLAN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VARATOUCH TECHNOLOGY INC
8 patentsUS6563488B1May 13, 2003
Pointing device with integrated switch
VARATOUCH TECHNOLOGY INC38 citations92
US6404323B1Jun 11, 2002
Variable resistance devices and methods
VARATOUCH TECHNOLOGY INC46 citations92
US6313826B1Nov 6, 2001
Pointing device with non-spring return mechanism
VARATOUCH TECHNOLOGY INC51 citations92
US6184866B1Feb 6, 2001
Pointing device
VARATOUCH TECHNOLOGY INC23 citations92
US7391296B2Jun 24, 2008
Resilient material potentiometer
VARATOUCH TECHNOLOGY INC10 citations83
US7190251B2Mar 13, 2007
Variable resistance devices and methods
VARATOUCH TECHNOLOGY INC5 citations73
US6252582B1Jun 26, 2001
Ergonomic pointing device
VARATOUCH TECHNOLOGY INC8 citations73
US6496178B1Dec 17, 2002
Pointing device
VARATOUCH TECHNOLOGY INC3 citations62