Granted Patent
Utility
US 4,514,349 · App. 06/491,903
Method and means for producing yarn
Inventor:
Barry Lipschitz
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: May 5, 1983
Inventor
Barry Lipschitz
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.