Inventor

DOE DAVID

US5 patents

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

HOFFMAN RESOURCES LLC

2 patents

US7038590B2May 2, 2006

Personal security and tracking system

HOFFMAN RESOURCES LLC253 citations97

US6624754B1Sep 23, 2003

Personal security and tracking system

HOFFMAN RESOURCES LLC215 citations96

HOFFMAN MARK

2 patents

US8466795B2Jun 18, 2013

Personal security and tracking system

HOFFMAN MARK15 citations81

US8149124B2Apr 3, 2012

Personal security and tracking system

HOFFMAN MARK11 citations81

Pragmatus Mobile LLC

1 patent

US9235972B2Jan 12, 2016

Personal security and tracking system

Pragmatus Mobile LLC6 citations77