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Patent applications and USPTO patent grants for Larkins; Joseph Dale.The latest application filed is for "coilable dual wall corrugated pipe and related method".
Patent | Date |
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Method of rotational molding rib profile for large diameter pipe fittings Grant 9,815,229 - Douglass, III , et al. November 14, 2 | 2017-11-14 |
Coilable dual wall corrugated pipe and related method Grant 9,662,826 - Douglass, III , et al. May 30, 2 | 2017-05-30 |
Coilable Dual Wall Corrugated Pipe And Related Method App 20160018027 - Douglass, III; Carl Raymond ;   et al. | 2016-01-21 |
Method Of Rotational Molding Rib Profile For Large Diameter Pipe Fittings App 20150151463 - Douglass, III; Carl Raymond ;   et al. | 2015-06-04 |
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