Holdren; Richard Lyell
Patent Applications and Registrations
Patent applications and USPTO patent grants for Holdren; Richard Lyell.The latest application filed is for "pipe/connector weld joint, and methods of welding same".
- Holdren; Richard Lyell - Lancaster OH
- Holdren; Richard Lyell - Lanscaster OH
| Patent | Date |
|---|---|
| Method of welding a pipe/connector joint Grant 7,741,580 - Holdren June 22, 2 | 2010-06-22 |
| Pipe/connector weld joint, and methods of welding same Grant 7,527,301 - Holdren May 5, 2 | 2009-05-05 |
| Pipe/connector weld joint, and methods of welding same Grant 7,510,218 - Holdren March 31, 2 | 2009-03-31 |
| Pipe/Connector Weld Joint, and Methods of Welding Same App 20080264908 - Holdren; Richard Lyell | 2008-10-30 |
| Pipe/Connector Weld Joint, and Methods of Welding Same App 20080264909 - Holdren; Richard Lyell | 2008-10-30 |
| "Pipe/Connector Weld Joint, and Methods of Welding Same" App 20080265562 - Holdren; Richard Lyell | 2008-10-30 |
| Pipe/Connector Weld Joint, and Methods of Welding Same App 20080265573 - Holdren; Richard Lyell | 2008-10-30 |
| Pipe/Connector Weld Joint, and Methods of Welding Same App 20080265572 - Holdren; Richard Lyell | 2008-10-30 |
| Pipe/connector weld joint, and methods of welding same App 20060191874 - Holdren; Richard Lyell | 2006-08-31 |
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