Granted Patent
Utility
US 4,553,384 · App. 06/683,229
Take-up shaft guard for open-end yarn spinning machine
Inventors:
Charles L. Crocker, Michael Wallace, Lee K. Powell
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Dec 18, 1984
Inventors
Charles L. Crocker
Michael Wallace
Lee K. Powell
Assignee (at issue)
Burlington Industries 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.