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 |
| 3955513 | Combined cultivating and particled material applying gardening tool A device in which a single elongate shaft serves to support a tined structure for the cultivation of ground, a hopper for holding a quantity of a particled material such as fertilizer or the like that will have a beneficial result when applied to the soil... | 05/11/1976 |