U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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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 147 - Coopering

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49 Subclasses


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Definition

Includes machines which are used exclusively in the manufacture of wooden barrels, fruit-boxes, baskets, or crates. Coopering does not include machines for sawing, bending, or planing staves or machines for sawing, splitting, cutting, or coiling hoops, except such as separate the hoops from a scored rod by racking or abruptly bending the rod or which combine two or more operations in the production of hoops, as planing and bending or planing and lapping or pointing.

 
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