Granted Patent
Utility
US 4,288,734 · App. 06/042,532
Bidirectional integrator
Inventor:
Eugene P. Finger
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: May 25, 1979
Inventor
Eugene P. Finger
Assignee (at issue)
Curtis Instruments, 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.