Granted Patent
Utility
US 4,515,561 · App. 06/473,076
Fiber treatment oven
Inventor:
Hans L. Melgaard
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Mar 7, 1983
Inventor
Hans L. Melgaard
Assignee (at issue)
Despatch Industries Limited Partnership
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.