Did You Know...
...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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| Number | Title | Issue Date |
| 6373959 | Electroacoustic transducer An electroacoustic transducer 1 is provided with a diaphragm 20 which is made of a magnetic material, and to which a magnetic piece 21 is fixed; a magnetic core 22 which is placed in proximity to the diaphragm 20; a coil 23 which supplies an oscillating m... | 04/16/2002 |
| 4171886 | Camera for instant pictures A camera body has mounted on it a lens mount which is pivotable relative to the camera between an operative and an inoperative position. A mechanism in the camera is activated and transports film from the camera film chamber through the camera during move... | 10/23/1979 |
| 3961344 | Dual field viewfinder A viewfinder of the inverted Galilean type, for use with a photographic camera having a pair of interchangeable objective lenses, comprising a viewfinder lens, an eyepiece having two reticles formed thereon, a fixed mirror frame and a movable mirror frame... | 06/01/1976 |
