Granted Patent
Utility
US 4,434,008 · App. 06/361,462
Substantive preparation material for yarns or plied yarns
Inventors:
Heinz Dumm, G/o/ tz Koerner, Manfred Krakenberg, Hans Rott, G/u/ nter Schmidt
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Mar 24, 1982
Inventors
Heinz Dumm
G/o/ tz Koerner
Manfred Krakenberg
Hans Rott
G/u/ nter Schmidt
Assignee (at issue)
Th. Goldschmidt. 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.