Granted Patent
Utility
US 5,490,604 · App. 07/728,380
Composter
Inventor:
Norman Alexander
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Jul 11, 1991
Inventor
Norman Alexander
Assignee (at issue)
Shape Plastics Corp.
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.