Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 5873392 | Process for monitoring faults in textile webs A process for automated monitoring of faults occurring in textile webs. At least one marking is worked into the web under manufacture. The marking permits incremental measurement of the textile web and facilitates the determination of particular positions... | 02/23/1999 |
| 3972624 | Process and apparatus for detecting longitudinal faults on moving webs of material In a process for detecting longitudinally orientated faults on moving webs of paper or film, the web is optically scanned line by line transversely to its direction of movement and read by reflection. The scanning line is moved to and fro across the whole... | 08/03/1976 |
