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 |
| 7677451 | Reducing incident infrared radiation received by one or more infrared detectors in a self checkout point of sale system A self checkout POS system including a security zone; an emitting tower including one or more infrared emitters; a detecting tower including one or more infrared detectors, the detecting tower located on a side of the security zone opposite the side on which the emi... | 03/16/2010 |