Granted Patent
Utility
US 4,803,289 · App. 06/503,139
Pheromones
Inventors:
Brian R. Laurence, John Anthony Pickett
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Jun 8, 1983
Inventors
Brian R. Laurence
John Anthony Pickett
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.