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 |
| 5739801 | Multithreshold addressing of a twisting ball display A multithreshold electrical twisting ball display device. The device is composed of electrically and optically anisotropic spheroidal balls of at least two different rotation thresholds, disposed in an elastomer substrate, together with an addressing elec... | 04/14/1998 |
