Granted Patent
Utility
US 5,543,107 · App. 08/401,466
Blow molding a closed plastic drum including two speed compression molding of an integral handling ring
Inventors:
John H. Malik, John J. Mikula, Robert A. Julien
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Mar 9, 1995
Inventors
John H. Malik
John J. Mikula
Robert A. Julien
Assignee (at issue)
Sonoco Products Company
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.