Granted Patent
Utility
US 6,648,044 · App. 10/321,889
Apparatus for sealing and creating a thermal perforation
Inventors:
Michael Bohn, William P. Belias
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Dec 17, 2002
Inventors
Michael Bohn
William P. Belias
Assignee (at issue)
PACTIV LLC
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.