Inventor

BACKMAN DOUGLAS J

US2 patents

⚠️ This page may combine multiple inventors who share the name “BACKMAN DOUGLAS J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AMERICAN NAVIGATIONS SYSTEMS I

1 patent

US5987380ANov 16, 1999

Hand-held GPS-mapping device

AMERICAN NAVIGATIONS SYSTEMS I152 citations93

AMERICAN NAVIGATION SYSTEMS IN

1 patent

US5902347AMay 11, 1999

Hand-held GPS-mapping device

AMERICAN NAVIGATION SYSTEMS IN376 citations93