Granted Patent
Utility
US 4,547,985 · App. 06/401,226
Method of protecting a metallic surface susceptible to abrasion by rock-like material
Inventors:
Vilnis Silins, Jerome H. Tameling
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Jul 23, 1982
Inventors
Vilnis Silins
Jerome H. Tameling
Assignee (at issue)
Sherritt Gordon Mines Limited
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.