Granted Patent
Utility
US 4,294,452 · App. 06/098,657
Target backstop
Inventors:
Harold J. Schlotter, Leroy Young
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Nov 29, 1979
Inventors
Harold J. Schlotter
Leroy Young
Assignee (at issue)
Champion International Corporation Limited
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.