Granted Patent
Utility
US 4,817,337 · App. 07/093,756
Radiation resistant door seal
Inventor:
Michael John Lahita
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Sep 8, 1987
Inventor
Michael John Lahita
Assignee (at issue)
AMCA International 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.