Granted Patent
Utility
US 4,429,524 · App. 06/360,912
False-twist device
Inventor:
Manfred Kress
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Mar 23, 1982
Inventor
Manfred Kress
Assignee (at issue)
Fag Kugelfischer Georg Shäfer AG
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.