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Patent applications and USPTO patent grants for Ollendick; David P..The latest application filed is for "automatic pre-fabrication of plated railroad ties and sections of railroad track".
Patent | Date |
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Automatic pre-fabrication of plated railroad ties and sections of railroad track App 20190226154 - Ollendick; David P. ;   et al. | 2019-07-25 |
Methods and apparatus for the manufacturing of prestressed reinforced concrete railroad ties and the like App 20050017403 - Ollendick, David P. ;   et al. | 2005-01-27 |
Methods and apparatus for the manufacturing of prestressed reinforced concrete railroad ties and the like App 20030113395 - Ollendick, David P. ;   et al. | 2003-06-19 |
System and assembly for the manufacturing of prestressed reinforced concrete railroad ties and the like Grant 6,561,780 - Ollendick , et al. May 13, 2 | 2003-05-13 |
Methods and apparatus for the manufacturing of prestressed reinforced concrete railroad ties and the like App 20020029451 - Ollendick, David P. ;   et al. | 2002-03-14 |
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