Patents per Year
Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9235972 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2016-01-12 |
| 8466795 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2013-06-18 |
| 8149124 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2012-04-03 |
| 7038590 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2006-05-02 |
| 6624754 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2003-09-23 |
| 6239700 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 2001-05-29 |
| 5742233 | Personal security and tracking system | Mark Hoffman, Ann Hoffman, David Doe | 1998-04-21 |