Granted Patent
Utility
US 5,208,029 · App. 07/757,195
Insect repellent and method using plant oils
Inventors:
Donald E. Plummer, Sonja A. Plummer
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Sep 10, 1991
Inventors
Donald E. Plummer
Sonja A. Plummer
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.