Granted Patent
Utility
US 4,724,960 · App. 06/433,230
Greenhouse film package
Inventors:
Richard W. Goodrum, James Walter Wheeler
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Oct 7, 1982
Inventors
Richard W. Goodrum
James Walter Wheeler
Assignee (at issue)
Ethyl Corporation
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.