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Icon_funbox Did You Know...

...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 241/88.3 - Three or more serially acting alternate perforate and imperforate surfaces


Subclass of Class 241 - Solid material comminution or disintegration
Definition: Apparatus in which the material is subjected to a succession
No. of patents: 1
Last issue date: 06/14/2005


NumberTitleIssue Date
6905032Screens for fibrous paper suspensions and process for making same
Process for manufacturing screens and screens suitable for use in wet screening fibrous paper suspensions, in which the screens include at least one screen plate having a number of sorting apertures. The process includes providing a number of fastening openings in t... 		06/14/2005
 
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