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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 172/115 - Tool steers implement


Subclass of Class 172 - Earth working
Definition: Apparatus in which the driven earth working element is used
No. of patents: 3
Last issue date: 04/08/2008


NumberTitleIssue Date
7354222Belted asphalt compactor
A belted asphalt compactor and method are provided. The compactor includes a first unit with a roller frame. A second unit is coupled to the first unit, and is generally identical thereto. At least one mid roller and two end rollers are mounted in the roller frames,...
04/08/2008
5033564Power riding trailer for an implement
A vehicle having a length, a front end and a substantially opposing rear end useful for propelling an implement pivotably coupled thereto at or near the front end. The vehicle comprises two driven wheels located at or near the rear end and positioned to r...
07/23/1991
4336760Earth working apparatus including aerators and material dispensers
An earthworking implement comprising a frame on which are supported front wheels, rear wheels and a rearmost dolly wheel. An aerator member with blades is rotatably secured to the frame between the front and rear wheels. The dolly wheel is mounted on the ...
06/29/1982
 
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