Granted Patent
Utility
US 4,468,664 · App. 06/338,839
Non-home run zoning system
Inventors:
Aaron A. Galvin, John K. Guscott, Martin E. Henderson, Roy Harvey
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Jan 12, 1982
Inventors
Aaron A. Galvin
John K. Guscott
Martin E. Henderson
Roy Harvey
Assignee (at issue)
American District Telegraph Company
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.