Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7362663 | Elapsed time indicator device The invention provides an electronic printed chromatic elapsed time indicator device comprising a switch, a power source and a power driven elapsed time display for indicating the elapse of a limited predetermined segment of time upon activation of the switch and ir... | 04/22/2008 |
