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 178/89 - Code recorders


Subclass of Class 178 - Telegraphy
Definition: Electromagnetic instruments for making a visible record
No. of patents: 1
Last issue date: 03/22/1977


NumberTitleIssue Date
4013965Circuit for preventing errors in decoding information from distorted pulses
A converter for converting radio teleprinter audio frequency signals from a radio receiver into teleprinter signals which are bipolar pulses for operating an output device. The converter includes a binary pulse decoder, which may be used independently in ...
03/22/1977
 
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