Granted Patent
Utility
US 6,557,236 · App. 10/027,095
Armature for a selectively engageable and disengageable coupling
Inventors:
Charles A. Boyer, Jeffrey C. Steiner
Patented Case
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Granted: May 6, 2003
Filed: Dec 20, 2001
Inventors
Charles A. Boyer
Jeffrey C. Steiner
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.