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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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Class 73/225 - With trip gear


Subclass of Class 73 - Measuring and testing
Definition: Meters wherein the valves of the measuring chamber are actuated
No. of patents: 0


 
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