Granted Patent
Utility
US 4,572,427 · App. 06/585,854
Controlled atmosphere enclosure
Inventors:
Glenn D. Selfridge, Russell C. Tipton
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Mar 2, 1984
Inventors
Glenn D. Selfridge
Russell C. Tipton
Assignee (at issue)
MALLINCKRODT LLC
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.