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

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...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!

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Class 411/929.2 - Distorted washer


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Art collection under art collection 929 in which a nut and
No. of patents: 1
Last issue date: 02/08/1977


NumberTitleIssue Date
4006661Reusable torque limiting fastening device
A reusable torque limiting device producing tactile feedback for a desired preset bolt tensile load comprises a body, provided with an internal bore threaded therethrough so as to be received over a threaded bolt or similar fastening element. One face of ...
02/08/1977
 
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