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U.S. patents available from 1976 to present.
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A new toilet tank assembly aquarium for housing aquatic creatures.

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Number of patents: 1
Last date: May 06, 2008

Number	Title	Issue Date
7367867	Two-side working machine A two-side working machine, comprising an upper and a lower working disc which hold on, and are fixed to, an upper and a lower carrier disc, and which are disposed coaxially with each other and are adapted to be rotationally driven relative to each other by a workin...	05/06/2008