Granted Patent
Utility
US 6,148,685 · App. 09/077,861
Duplex sprocket/gear construction and method of making same
Inventors:
Terry M. Cadle, Joel H. Mandel, Carl J. Landgraf, Timothy E. Geiman
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jun 4, 1998
Inventors
Terry M. Cadle
Joel H. Mandel
Carl J. Landgraf
Timothy E. Geiman
Assignee (at issue)
Zenith Sintered Products, 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.