Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4978946 | Personal security communication system A personal security communication system provides an indication that a worker may be incapacitated. The system may be configured as a buddy system comprising first and second portable units (100 and 200) acting as a pair (98). Each portable unit (100 and ... | 12/18/1990 |
| 4884067 | Motion and position sensing alarm A personal security communication system is disclosed. It is comprised of a motion and position sensor adapted to detect motion and lack of motion. The sensor has a motion and position sensing switch having means indicative of the motion of a contact maki... | 11/28/1989 |
