Granted Patent
Utility
US 6,131,509 · App. 09/248,394
Method and apparatus for perforating and crushing containers
Inventor:
Robert M. Davis
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Feb 12, 1999
Inventor
Robert M. Davis
Assignee (at issue)
CP MANUFACTURING, 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.