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 |
| 7270995 | Analyzing device The present invention is an analytical device which comprises a porous piece assembly consisting of a liquid reagent-receiving porous piece (1), a labeled substance-retaining piece (2), a test piece (3) comprising a detection site (4) and... | 09/18/2007 |