Granted Patent
Utility
US 4,409,045 · App. 06/399,980
Method and apparatus for sealing the sidewall and bottom seam portions of two-piece containers during manufacture thereof
Inventor:
Charles E. Busse
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jul 20, 1982
Inventor
Charles E. Busse
Assignee (at issue)
Maryland Cup 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.