Granted Patent
Utility
US 5,622,280 · App. 08/518,891
Method and apparatus for sealing an open head drum
Inventors:
Harry Mays, George Patton
Patented Case
View Patent ↗
Granted: Apr 22, 1997
Filed: Jul 6, 1995
Inventors
Harry Mays
George Patton
Assignee (at issue)
NORTH AMERICA PACKAGING 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.