Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 6637092 | Method and apparatus for winding a helical pipe from its inside A machine (200) for winding a strip of material (212) into a helical pipe wherein adjacent convolutions of the strip (212) are interlocked. The machine comprises: a frame (220) having circumferentially spaced supports in the form of rollers (266, 276, 278... | 10/28/2003 |
| 5660912 | Plastic profiled strip forming helically wound tube using hinged flap for jointing A plastic profiled strip (10) is provided for producing helically wound tubes or pipes, the strip (10) having female and male joint formations (13, 14) extending along opposite longitudinal margins thereof and arranged so that upon spirally winding the st... | 08/26/1997 |
| 5595800 | Helically wound reinforced ribbed composite structure This invention relates to improvements to reinforced ribbed structures, and in particular to reinforced or strengthened spirally wound pipes or tubes made from composite materials.... | 01/21/1997 |
