Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8490228 | Easy to assemble, tool less, easy to recycle, mattress support | Philip J. Blyskal, George A. Clark | 2013-07-23 |
| 7178686 | Rotationally molded subterranean tank with riser | Todd Bolzer | 2007-02-20 |
| 7011328 | Transversely extending pivotal hitch mechanism | Brad Anderson, Chad Orthaus, Jeffrey Arnold Wilkens | 2006-03-14 |
| 6905284 | APPARATUS AND METHOD FOR MANUFACTURING A COLLATED ARRAY OF TEMPORARY RAISED PAVEMENT MARKERS (TRPMS) FOR FACILITATING THE SERIAL APPLICATION OF SUCH TEMPORARY RAISED PAVEMENT MARKERS (TRPMS) TO ROADWAY SURFACES | Michael Christensen | 2005-06-14 |
| 6712548 | Temporary raised pavement marker (TRPM) applicator machine for automatically applying pavement markers to road surfaces | Brad Anderson, Chad Orthaus, Jeffrey Arnold Wilkens | 2004-03-30 |
| 6709193 | Temporary raised pavement marker (TRPM) applicator machine for automatically applying pavement markers to road surfaces | Michael Christensen, John Kirckof, Jeffrey Arnold Wilkens, Brad Anderson | 2004-03-23 |
| 6619755 | Machine for automatically removing temporary raised pavement markers (TRPMs) from roadway surfaces | Michael Christensen, Jeffrey Arnold Wilkens | 2003-09-16 |
| 5374026 | Outlet fitting | Hal M. Spurrier, William K. Rogers | 1994-12-20 |