U.S. patents available from 1976 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 294/65.5 - MAGNET


Subclass of Class 294 - Handling: hand and hoist-line implements
Definition: Devices for raising material by means of one or more magnets.
No. of patents: 243
Last issue date: 04/24/2012


            7  
NumberTitleIssue Date
3968986Electromagnetic lifting device
An electromagnetic lifting device for handling a ferromagnetic material, which device has a magnetic assembly consisting of a plurality of movable magnetic pole members having relatively small pole areas, and said assembly has a given total pole area, thu...
07/13/1976
3960279Magnetic alignment for semiconductor device bonding
A self-aligning method and apparatus for magnetically transferring semiconductor chips to corresponding fingers of a conductive lead frame for bonding thereto. A chip having a plurality of soft ferromagnetic integral leads on one face thereof is positione...
06/01/1976
            7  
 
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