Granted Patent
Utility
US 4,648,236 · App. 06/857,111
Packaging machine including a folding, sealing and conveying apparatus
Inventor:
Alfred Knecht
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Apr 29, 1986
Inventor
Alfred Knecht
Assignee (at issue)
SIG Schweizerische Industrie-Gesellschaft
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.