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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 123/146.5C - Fluid level or pressure-actuated ignition switches


Subclass of Class 123 - Internal-combustion engines
No. of patents: 2
Last issue date: 11/09/1999


NumberTitleIssue Date
5982047Pressure switching device
The invention relates to a pressure switching device of the type used in motor vehicles and includes a pressure sensor 21 arranged in a housing 3, which generates an electrical signal U according to the pressure p of a pressure medium or monitored fluid t...
11/09/1999
4136660Oil pressure failure protection device for internal combustion engines
A device for slowing an internal combustion engine in the event of oil pressure failure at an engine speed above idle, includes an SCR with the gate thereof connected to an engine rpm sensor which provides a voltage analog of engine speed. The SCR is conn...
01/30/1979
 
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