Granted Patent
Utility
US 4,517,984 · App. 06/596,488
Esophageal probe
Inventor:
Alfred R. Perlin
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Apr 4, 1984
Inventor
Alfred R. Perlin
Assignee (at issue)
The Kendall Company LP
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.