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Patent applications and USPTO patent grants for Ittmann; George W..The latest application filed is for "bricks and method of forming bricks with high coal ash content using a press mold machine and variable firing trays".
Patent | Date |
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Bricks and method of forming bricks with high coal ash content using a press mold machine and variable firing trays Grant 9,776,921 - Belden , et al. October 3, 2 | 2017-10-03 |
Bricks And Method Of Forming Bricks With High Coal Ash Content Using A Press Mold Machine And Variable Firing Trays App 20120031306 - Belden; Robert Thomas ;   et al. | 2012-02-09 |
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