Granted Patent
Utility
US 4,137,775 · App. 05/727,128
Ultrasonic apparatus
Inventor:
Christopher Archibald Gordon LeMay
Patented Case
View Patent ↗
Granted: Feb 6, 1979
Filed: Sep 27, 1976
Inventor
Christopher Archibald Gordon LeMay
Assignee (at issue)
EMI, LLC
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.