Inventor
GRISHAM WILLIAM T
US4 patents
⚠️ This page may combine multiple inventors who share the name “GRISHAM WILLIAM T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TIME DOMAIN CORP
3 patentsUS6917284B2Jul 12, 2005
Railroad collision avoidance system and method for preventing train accidents
TIME DOMAIN CORP115 citations97
US6759948B2Jul 6, 2004
Railroad collision avoidance system and method for preventing train accidents
TIME DOMAIN CORP142 citations97
US7148791B2Dec 12, 2006
Wireless danger proximity warning system and method
TIME DOMAIN CORP125 citations96