Granted Patent
Utility
US 6,413,071 · App. 09/536,293
Thin plate spinnerette assembly
Inventors:
Charles F. Helms, Jr., Harold R. Vickery, Keith V. Blankenship
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Mar 27, 2000
Inventors
Charles F. Helms, Jr.
Harold R. Vickery
Keith V. Blankenship
Assignee (at issue)
BASF SE
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.