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Patent applications and USPTO patent grants for Sinsel; Friedel.The latest application filed is for "device for illuminating components of transparent material in testing for irregularities".
Patent | Date |
---|---|
Device for illuminating components of transparent material in testing for irregularities Grant 4,822,165 - Schmalfuss , et al. April 18, 1 | 1989-04-18 |
Device for testing components of transparent material for surface irregularities and occlusions Grant 4,815,844 - Schmalfuss , et al. March 28, 1 | 1989-03-28 |
Method and apparatus for the contactless measuring of the tread quality of railroad Grant 4,798,964 - Schmalfuss , et al. January 17, 1 | 1989-01-17 |
Method and apparatus for measuring data for calculating the diameter of wheels, especially railroad wheel sets Grant 4,749,870 - Schmalfuss , et al. June 7, 1 | 1988-06-07 |
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