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 |
| 4976378 | Feed metering mechanism A metering device for measuring bulk particulate material, such as feed, includes a hollow casing having a paddle gate positioned therein. Rotation of the paddle gate dispenses a predetermined weight of particulate material into the outlet port of the dev... | 12/11/1990 |
