Granted Patent
Utility
US 4,579,279 · App. 06/584,926
Electrostatic sprayers
Inventor:
John A. Marchant
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Feb 29, 1984
Inventor
John A. Marchant
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.