Granted Patent
Utility
US 4,206,653 · App. 05/949,124
Ultrasonic apparatus
Inventor:
Christopher Archibald Gordon LeMay
Patented Case
View Patent ↗
Granted: Jun 10, 1980
Filed: Oct 6, 1978
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.