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 |
| 4691664 | Pet receptacle A dish-like receptacle for serving liquids to small animals whereby a coolant source maintains the liquid at a reduced temperature over extended periods. The coolant source is a frozen gel which may be refrozen, regenerated or replaced as needed.... | 09/08/1987 |
