Granted Patent
Utility
US 5,827,941 · App. 08/965,498
Flow-controlled calibration syringe
Inventors:
Fred Good, Carl Zimmer
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Nov 6, 1997
Inventors
Fred Good
Carl Zimmer
Assignee (at issue)
Pulmonary Data Service Instrumentation, 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.