Chelchowski; David
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chelchowski; David.The latest application filed is for "stepped down grip ring for use in pipe couplings and pipe coupling incorporating same".
- Chelchowski; David - North Plympton N/A AU
- Chelchowski; David - Largs Bay AU
- Chelchowski; David - South Australia AU
- Chelchowski; David - Adelaide South Australia AU
- Chelchowski; David - Largs Bay South Australia 5016 AU
- Chelchowski; David - Larges Bay AU
| Patent | Date |
|---|---|
| Stepped down grip ring for use in pipe couplings and pipe coupling incorporating same Grant 8,764,069 - Newall , et al. July 1, 2 | 2014-07-01 |
| Stepped Down Grip Ring For Use In Pipe Couplings And Pipe Coupling Incorporating Same App 20120175874 - Newall; Peter ; et al. | 2012-07-12 |
| Method of manufacture of a nut and tail assembly Grant 7,846,365 - Chelchowski , et al. December 7, 2 | 2010-12-07 |
| Method Of Manufacture Of A Nut And Tail Assembly App 20090250837 - Chelchowski; David ; et al. | 2009-10-08 |
| Pipe Coupling Adapted for Sealing the End of a Pipe App 20090127803 - Chelchowski; David ; et al. | 2009-05-21 |
| Collet for pipe coupling Grant 7,455,328 - Chelchowski , et al. November 25, 2 | 2008-11-25 |
| O-ring Grant D558,037 - Chelchowski , et al. December 25, 2 | 2007-12-25 |
| Pipe coupling Grant 7,270,351 - Chelchowski , et al. September 18, 2 | 2007-09-18 |
| Nut and tail assembly Grant 7,178,838 - Chelchowski , et al. February 20, 2 | 2007-02-20 |
| Method of manufacture of a nut and tail assembly App 20060214328 - Chelchowski; David ; et al. | 2006-09-28 |
| Pipe coupling App 20050285391 - Chelchowski, David ; et al. | 2005-12-29 |
| Pipe coupling Grant 6,974,162 - Chelchowski , et al. December 13, 2 | 2005-12-13 |
| Collet for pipe coupling App 20050084327 - Chelchowski, David ; et al. | 2005-04-21 |
| Nut and tail assembly and method for the production thereof said tail including a rigid outer sleeve App 20040251687 - Chelchowski, David ; et al. | 2004-12-16 |
| Coupling device for polymeric pipes App 20040169370 - Chelchowski, David ; et al. | 2004-09-02 |
| Coupling device for polymeric pipes Grant 6,702,336 - Chelchowski , et al. March 9, 2 | 2004-03-09 |
| Coupling Device For Polymeric Pipes App 20040041399 - Chelchowski, David ; et al. | 2004-03-04 |
| Pipe coupling App 20030197380 - Chelchowski, David ; et al. | 2003-10-23 |
| Ball valve App 20010008277 - Roszkowski, Bogdan ; et al. | 2001-07-19 |
| A valve arrangement Grant 5,280,803 - Swift , et al. January 25, 1 | 1994-01-25 |
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