DC

David Chelchowski

PP Philmac Pty: 4 patents #2 of 11Top 20%
CL Caroma Industries Limited: 2 patents #12 of 33Top 40%
Overall (All Time): #464,854 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8764069 Stepped down grip ring for use in pipe couplings and pipe coupling incorporating same Peter Newall, Malcolm Pridham 2014-07-01
7846365 Method of manufacture of a nut and tail assembly Geoffrey Puckett 2010-12-07
7455328 Collet for pipe coupling Geoffrey Puckett 2008-11-25
D558037 O-ring Geoffrey Puckett, Malcolm Pridham 2007-12-25
7270351 Pipe coupling Geoffrey Puckett, Luke C. Raymond 2007-09-18
7178838 Nut and tail assembly Geoffrey Puckett 2007-02-20
6974162 Pipe coupling Geoffrey Puckett, Luke C. Raymond 2005-12-13
6702336 Coupling device for polymeric pipes Geoffrey Puckett 2004-03-09
6471183 Ball valve Bogdan Roszkowski 2002-10-29
5502846 Flush tank mechanism Colin William Wooldridge 1996-04-02
5280803 A valve arrangement David B. Swift 1994-01-25