Granted Patent
Utility
US 4,584,020 · App. 06/557,936
Wear part with high wear strength
Inventor:
Mats Waldenstrom
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Dec 5, 1983
Inventor
Mats Waldenstrom
Assignee (at issue)
Santrade, 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.