Granted Patent
Utility
US 6,769,142 · App. 10/241,287
Positive drive cover system
Inventors:
Kelly Ragsdale, Cory Brady
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Sep 9, 2002
Inventors
Kelly Ragsdale
Cory Brady
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.