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 |
| 4221612 | Grinding members Forged grinding members of white cast iron containing chromium composed of a solid martensitic or austenitic solution containing a secondary chromium carbides and primary or eutectic chromium carbides of the M7 C3 type, which are fin... | 09/09/1980 |
| 3961994 | Manufacture of grinding members of ferrous alloys Forged grinding members and a method for their manufacture from white cast iron having a high chromium content comprising heating a bar of white cast iron of 1.5% to 3% by weight carbon, 8 to 25% by weight chromium, 0% to 2% by weight molybdenum at a temp... | 06/08/1976 |
