U.S. patents available from 1976 to present.
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...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!

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Class 334/62 - Variometer


Subclass of Class 334 - Tuners
Definition: Subject matter wherein the variable mutual inductance device
No. of patents: 1
Last issue date: 09/05/2006


NumberTitleIssue Date
7102258Manual electric generating device
The present invention discloses a manual electric generating device, which comprises an upper casing, a lower casing; a rotor, a fixed stand, a hollow cylinder, a coil for generating power supply; and a printed circuit board for processing and outputting the power s...
09/05/2006
 
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