Granted Patent
Utility
US 5,944,444 · App. 08/909,191
Control system for draining, irrigating and heating an athletic field
Inventors:
Joseph E. Motz, Mark A. Heinlein, James B. Goddard, Carl Tyner, Craig Reese, Brian L. Ferry
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Aug 11, 1997
Inventors
Joseph E. Motz
Mark A. Heinlein
James B. Goddard
Carl Tyner
Craig Reese
Brian L. Ferry
Assignees (at issue)
Technology Licensing Corp.
Advanced Drainage Systems, Inc.
Murray Equipment, 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.