DH

Douglas J. Hamar

Overall (All Time): #518,305 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8220949 Lighted flooring Jerry Milatz 2012-07-17
7918579 Lighted flooring Jerry Milatz 2011-04-05
7419078 Nailing device 2008-09-02
6931808 Floor system 2005-08-23
6397543 Floor system 2002-06-04
6173548 Portable multi-section activity floor and method of manufacture and installation Mark Young 2001-01-16
6044606 Floor system 2000-04-04
5987839 Multi-panel activity floor with fixed hinge connections Mark Young, Richard Granroth 1999-11-23
5121579 Portable sectional flooring system with post support Gopal Jayaraman, Richard Granroth, Robert L. Whipple, Harold A. Evenson, Edward K. Hamar 1992-06-16
5020286 Portable sectional flooring system with post support Gopal Jayaraman, Richard Granroth, Robert L. Whipple, Harold A. Evensen 1991-06-04