Granted Patent
Utility
US 4,844,071 · App. 07/175,937
Endoscope coupler device
Inventors:
Chingfa Chen, Danny L. Pastrick
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Mar 31, 1988
Inventors
Chingfa Chen
Danny L. Pastrick
Assignee (at issue)
Baxter Travenol Laboratories, 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.