Granted Patent
Utility
US 4,361,007 · App. 06/127,446
Open end spun slub yarn method and apparatus
Inventor:
John H. Sumner
Patented Case
View Patent ↗
Granted: Nov 30, 1982
Filed: Mar 5, 1980
Inventor
John H. Sumner
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.