U.S. patents available from 1976 to present.
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...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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Class 73/546 - Leaf spring biasing means


Subclass of Class 73 - Measuring and testing
Definition: Apparatus wherein a leaf spring supports or biases the centrifugal
No. of patents: 1
Last issue date: 03/23/1976


NumberTitleIssue Date
3945199Flyweight speed sensor
A load on the flyweight transmitted through the pilot valve to preload the thrust bearings of a speed sensor serves to prevent the fuel control for a turbine type of power plant from shifting to its emergency schedule from the starting or normal schedule ...
03/23/1976
 
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