Granted Patent
Utility
US 4,137,358 · App. 05/694,498
Micro-crystalline wax dip formulation additives for protection of adhesive-coated fabrics and single end cords
Inventor:
Roy E. Hartz
Patented Case
View Patent ↗
Granted: Jan 30, 1979
Filed: Jun 10, 1976
Inventor
Roy E. Hartz
Assignee (at issue)
Uniroyal Ltd.
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.