Granted Patent
Utility
US 6,774,517 · App. 10/182,012
Injection molded threaded rotor and manufacture method
Inventors:
Keith Kowalski, Nino Maini
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jul 24, 2002
Inventors
Keith Kowalski
Nino Maini
Assignee (at issue)
TRI-TEXCO INC.
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.