U.S. patents available from 1976 to present.
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...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.

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Class 172/539 - Smooth roller with groove, rim or disk


Subclass of Class 172 - Earth working
Definition: Apparatus comprising a broad-rimmed rolling device having
No. of patents: 4
Last issue date: 10/24/2006


NumberTitleIssue Date
7124835Agricultural machine comprising a towed support frame and rollers provided with a set of dome profile pneumatic tires
The machine comprises a given number of roller pairs respectively connected to the machine frame by a linking part (32). The linking part (32) of each roller pair is adapted so as to enable the rollers (12a, 12b) to incline ...
10/24/2006
4796550Single angled blade coulter and fertilizer opener
A conservation tillage attachment for a seed planting unit that functions to cut and clear away prior crop residue, fracture the soil ahead of the seed trench opener, and form a trench for the deposit of dry or liquid fertilizer offset from and parallel t...
01/10/1989
4693023Snow shaping means
A snow shaping means intended to be towed e.g. behind a vehicle and consisting of a cylindrical snow compacting means mounted in a frame and having track shaping elements on its periphery. Now that the so-called diagonal style has been introduced in skiin...
09/15/1987
4020906Garden marker
A rotary tool for marking a straight or curved groove in a garden in which seeds are to be laid. The tool includes an enclosed drum, which may be filled with water, with the drum rotatably mounted to a yoke fixed to a handle. A rim centrally fitted with a...
05/03/1977
 
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