Granted Patent
Utility
US 4,242,833 · App. 06/015,391
Greenhouse and method of growing plants in cold climates
Inventor:
Reed E. Maes, Jr.
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Feb 26, 1979
Inventor
Reed E. Maes, Jr.
Assignee (at issue)
Environmental Research Institute
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.