Granted Patent
Utility
US 4,639,438 · App. 06/839,036
O,S-dialkyl-O-(substituted phenyl)-thiolphosphates as pesticides
Inventors:
Richard Sehring, Wolfgang Buck, Ricarda Prokic-Immel, Sigmund Lust
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Mar 12, 1986
Inventors
Richard Sehring
Wolfgang Buck
Ricarda Prokic-Immel
Sigmund Lust
Assignee (at issue)
Celamerck GmbH & Co. KG
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.