Granted Patent
Utility
US 4,427,730 · App. 06/371,600
Tube packing sheet with spaced support surfaces
Inventors:
Gerald L. Robbins, Henry R. Vigue
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Apr 26, 1982
Inventors
Gerald L. Robbins
Henry R. Vigue
Assignee (at issue)
Keyes Fibre 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.