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 |
| 7168377 | Wig making needle A vertically reciprocatable needle (41) that is extremely fine in its lengthwise direction, having a leading end portion of a triangular pyramidal shape. Edges (41b) are formed on a periphery of the leading end portion, and an engaging portion (... | 01/30/2007 |
| 4188894 | Hair rooting apparatus with its hooked needle moving also transversely In rooting hair or similar substances on the surface of a material such as a woven or knitted fabric or a yarn or an elastic material by means of a sewing machine hooked needle, in the manufacture of wigs, false eyelash or long pile fabrics, the hooked ne... | 02/19/1980 |
| 3980090 | Hair seizure and implantation method A method of seizing and implanting fiber in a base includes the steps of positioning a number of fibers together, moving a hollow needle into contact with the fiber ends so that a fiber end is received into the hollow of the needle, and inserting the need... | 09/14/1976 |
| 3977335 | Automated hair implantation system An automated system for implanting hair in a scalp base includes a hollow needle, a linkage arrangement for holding and moving the needle along an arc-like path between a first and second position, and apparatus for holding and positioning a bundle of hai... | 08/31/1976 |
