Granted Patent
Utility
US 6,318,228 · App. 09/065,746
Forcible entry device
Inventor:
James M. Thompson
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Apr 24, 1998
Inventor
James M. Thompson
Assignee (at issue)
Ramtech 2000, L.L.C.
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.