Granted Patent
Utility
US 4,557,478 · App. 06/612,474
Heavy bag stand
Inventor:
Norman D. Levine
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: May 21, 1984
Inventor
Norman D. Levine
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.