Granted Patent
Utility
US 4,844,892 · App. 07/257,956
Pheromones
Inventors:
Brian R. Laurence, John Anthony Pickett
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Oct 14, 1988
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.