Granted Patent
Utility
US 4,143,554 · App. 05/833,244
Ultrasonic scanner
Inventors:
Art Nagy, Andrew P. Proudian
Patented Case
View Patent ↗
Granted: Mar 13, 1979
Filed: Sep 14, 1977
Inventors
Art Nagy
Andrew P. Proudian
Assignee (at issue)
Second Foundation, 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.