Inventor
HEGGESTAD ROBERT E
US4 patents
⚠️ This page may combine multiple inventors who share the name “HEGGESTAD ROBERT E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HARMON INDUSTRIES
3 patentsUS5452870ASep 26, 1995
Fixed data transmission system for controlling train movement
HARMON INDUSTRIES130 citations96
US5340062AAug 23, 1994
Train control system integrating dynamic and fixed data
HARMON INDUSTRIES122 citations96
US5533695AJul 9, 1996
Incremental train control system
HARMON INDUSTRIES215 citations95