Granted Patent
Utility
US 4,737,490 · App. 06/933,411
S-(3-buten-1-yl) trithiophosphonate insecticides
Inventors:
Charles G. Chavdarian, Valerie F. Heusinkveld
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Nov 21, 1986
Inventors
Charles G. Chavdarian
Valerie F. Heusinkveld
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.