Granted Patent
Utility
US 4,838,524 · App. 07/094,242
Noise barrier
Inventors:
Patrick McKeown, Jack W. Neiger
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Sep 8, 1987
Inventors
Patrick McKeown
Jack W. Neiger
Assignee (at issue)
Cyclops 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.