Granted Patent
Utility
US 6,350,333 · App. 08/409,468
Laminator for corrugated paperboard sheets
Inventors:
Harold D. Welch, Dennis L. Lemke, Alan J. Pipkorn, James A. Wiedenhoeft
Patented Case
View Patent ↗
Granted: Feb 26, 2002
Filed: Mar 23, 1995
Inventors
Harold D. Welch
Dennis L. Lemke
Alan J. Pipkorn
James A. Wiedenhoeft
Assignee (at issue)
Marquip, 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.