Granted Patent
Utility
US 4,587,751 · App. 06/708,648
Wear cap style excavating tooth
Inventors:
Kaj Sjogren, James Brosh
Patented Case
View Patent ↗
Granted: May 13, 1986
Filed: Mar 6, 1985
Inventors
Kaj Sjogren
James Brosh
Assignee (at issue)
ESCO GROUP 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.