Granted Patent
Utility
US 5,126,946 · App. 07/611,771
Ultrasonic edge detector
Inventor:
Wen-Hsiung Ko
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Nov 13, 1990
Inventor
Wen-Hsiung Ko
Assignee (at issue)
North American Manufacturing Corporation
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.