Granted Patent
Utility
US 6,150,789 · App. 09/323,467
Stepper motor control
Inventor:
Robert Pulford, Jr.
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jun 1, 1999
Inventor
Robert Pulford, Jr.
Assignee (at issue)
TRI-TECH CORPORATION
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.