Granted Patent
Utility
US 4,930,702 · App. 07/285,865
Detachable chemical sprayer
Inventor:
John A. Vanderjagt
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Dec 16, 1988
Inventor
John A. Vanderjagt
Assignee (at issue)
Ingersoll-Rand 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.