Granted Patent
Utility
US 6,146,705 · App. 09/322,576
Structural mat matrix
Inventor:
Darrell Heine
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: May 28, 1999
Inventor
Darrell Heine
Assignee (at issue)
Elk Corporation of Dallas
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.