Granted Patent
Utility
US 6,731,043 · App. 10/037,546
One-piece field core shell
Inventors:
Robert David Pritchard, Jr., Michael A. Hamulak, Randy Monahan
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Oct 22, 2001
Inventors
Robert David Pritchard, Jr.
Michael A. Hamulak
Randy Monahan
Assignee (at issue)
A.J. Rose Manufacturing Co.
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.