Granted Patent
Utility
US 4,423,028 · App. 06/334,704
Control of houseflies by fumigant activity
Inventors:
Frank H. Walker, Ordell L. Wolfe
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Dec 28, 1981
Inventors
Frank H. Walker
Ordell L. Wolfe
Assignee (at issue)
Stauffer Chemical Company
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.