Granted Patent
Utility
US 5,986,907 · App. 08/973,249
Method and apparatus for rectification derectification and power flow control
Inventor:
Rudolf Limpaecher
Patented Case
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Granted: Nov 16, 1999
Filed: Apr 1, 1998
Inventor
Rudolf Limpaecher
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.