Granted Patent
Utility
US 4,593,873 · App. 06/587,828
Portable hamper with foot pedal operated cover
Inventor:
Ralph E. Nelson
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Mar 9, 1984
Inventor
Ralph E. Nelson
Assignee (at issue)
Winfield 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.