Granted Patent
Utility
US 4,183,515 · App. 05/920,130
Bag folding machine
Inventor:
John B. Coast
Patented Case
View Patent ↗
Granted: Jan 15, 1980
Filed: Jun 28, 1978
Inventor
John B. Coast
Assignee (at issue)
Union Carbide 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.