Granted Patent
Utility
US 4,979,739 · App. 07/388,768
Ball return control apparatus
Inventors:
Bruce Allen, Richard B. Shelton, Ullrich K. A. Kunnecke, Robert J. Brejcha, Edward K. Miguel
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Aug 1, 1989
Inventors
Bruce Allen
Richard B. Shelton
Ullrich K. A. Kunnecke
Robert J. Brejcha
Edward K. Miguel
Assignee (at issue)
Kidde Recreation Products, 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.