Granted Patent
Utility
US 4,332,085 · App. 06/168,229
Rope helix gage
Inventors:
John Jacko, William F. Stack
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Jul 10, 1980
Inventors
John Jacko
William F. Stack
Assignee (at issue)
United States Steel 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.