Granted Patent
Utility
US 4,183,613 · App. 05/941,773
Microscope drape and method of making same
Inventors:
David L. Walchle, Richard E. Pierson
Patented Case
View Patent ↗
Granted: Jan 15, 1980
Filed: Sep 13, 1978
Inventors
David L. Walchle
Richard E. Pierson
Assignee (at issue)
Xomed, Inc.
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.