Granted Patent
Utility
US 4,928,889 · App. 07/292,376
Watering system for greenhouse
Inventor:
Gary H. Lucas
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Dec 30, 1988
Inventor
Gary H. Lucas
Assignee (at issue)
Integrated Technology Systems, 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.