Granted Patent
Utility
US 5,196,451 · App. 07/793,292
Avian control
Inventors:
Peter W. Greig-Smith, Michael F. Wilson
Patented Case
View Patent ↗
Granted: Mar 23, 1993
Filed: Nov 14, 1991
Inventors
Peter W. Greig-Smith
Michael F. Wilson
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.