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Patent applications and USPTO patent grants for Heindenreich & Harbeck.The latest application filed is for "method for blow molding a hollow plastic article having a concave base".
Patent | Date |
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Method for blow molding a hollow plastic article having a concave base Grant 4,035,455 - Rosenkranz , et al. July 12, 1 | 1977-07-12 |
Machine For Making Hollow Articles, Especially Bottles, Of Thermoplastics Grant 3,599,280 - Rosenkranz , et al. August 17, 1 | 1971-08-17 |
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