Granted Patent
Utility
US 4,241,871 · App. 05/964,053
Apparatus and method for ventilation of animal enclosures
Inventors:
Alfred T. Newell, III, Alfred T. Newell, Jr.
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Nov 27, 1978
Inventors
Alfred T. Newell, III
Alfred T. Newell, Jr.
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.