Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D678472 | Valve handle | — | 2013-03-19 |
| D678473 | Handle extension for valve | — | 2013-03-19 |
| D678474 | Arcuate disc for butterfly valve | — | 2013-03-19 |
| D678475 | Butterfly valve handle extension | — | 2013-03-19 |
| D673657 | Fluted drop tee | — | 2013-01-01 |
| D653734 | Screened gasket | — | 2012-02-07 |
| D652904 | Air filter inlet/outlet housing | — | 2012-01-24 |
| 8091925 | Fluted hopper tee | — | 2012-01-10 |
| 8087816 | Aerator device inducing cyclonic flow | — | 2012-01-03 |
| 7988386 | Split collar with offset hook and hinge hopper assembly | — | 2011-08-02 |
| 7520925 | Filter and silencer with a quick disconnect lid | Roger Breakfield | 2009-04-21 |
| 7055440 | Remotely operated manhole cover for a tanker | — | 2006-06-06 |
| 6952996 | Remotely operated manhole cover for a tanker | Roger Breakfield, William Spencer, Scott A. Finnell | 2005-10-11 |
| 6786362 | Swing-away hopper tee | — | 2004-09-07 |
| 6679289 | Swing check valve | — | 2004-01-20 |
| 6170976 | Preassembled fluidizing device having expansive air passage stimulating enhanced flow of granular materials in tank trailers and containers | — | 2001-01-09 |
| 5988867 | Preassembled fluidizing device having expansive air passage stimulating enhanced flow of granular materials in tank trailers and containers | — | 1999-11-23 |
| 5842681 | Pivotal hopper tee with alignable swing-away hopper tee assembly | — | 1998-12-01 |
| 5722666 | Pipe coupler gasket with triangular sealing ridges | — | 1998-03-03 |
| 5676404 | Low profile flanged tee | — | 1997-10-14 |
| 5617907 | Recessed nut bar | — | 1997-04-08 |
| D376416 | Directional flow structural tee | — | 1996-12-10 |
| D372765 | Gasket | — | 1996-08-13 |
| 5540465 | Pipe, valve and/or tee coupler | — | 1996-07-30 |
| D358202 | Reinforced structural tee | — | 1995-05-09 |