Granted Patent
Utility
US 4,823,366 · App. 07/014,991
Material conveying equipment with control for paving materials using ultrasonic waves
Inventor:
Loren E. Williams
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Feb 17, 1987
Inventor
Loren E. Williams
Assignee (at issue)
White Consolidated Industries, 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.