Granted Patent
Utility
US 4,459,719 · App. 06/465,930
Sweeping machine with dirt and debris control flap
Inventor:
Richard H. Notestine
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Feb 14, 1983
Inventor
Richard H. Notestine
Assignee (at issue)
The Scott Fetzer 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.