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...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.

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Class 451/235 - Harvester knife


Subclass of Class 451 - Abrading
Definition: Abrading machine especially adapted for sharpening the cutting
No. of patents: 1
Last issue date: 09/23/2008


NumberTitleIssue Date
7426777Method of producing member having face-geared surface
A method of producing a member with a face-geared surface. An example of the method includes an initial process preparing a work piece and a hob, and a geared surface forming process forming a geared surface on a part of the area. In addition, at least one of the ho...
09/23/2008
 
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