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Patent applications and USPTO patent grants for Roos; Robert R..The latest application filed is for "push-in fitting for plastic pipe".
Patent | Date |
---|---|
Push-in Fitting For Plastic Pipe Grant 3,716,257 - Hackman , et al. February 13, 1 | 1973-02-13 |
Connection Fitting For A Pipe Grant 3,677,578 - Roos July 18, 1 | 1972-07-18 |
Plastic Service Fitting And Method And Apparatus For Attaching Same Grant 3,633,599 - Roos January 11, 1 | 1972-01-11 |
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