Granted Patent
Utility
US 6,682,655 · App. 09/962,619
Concrete recovery system
Inventors:
David James Beckham, Alan Joseph Lowe, Michael John Fullam
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Sep 26, 2001
Inventors
David James Beckham
Alan Joseph Lowe
Michael John Fullam
Assignee (at issue)
Knelson Patents Inc.
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.