Granted Patent
Utility
US 5,343,080 · App. 08/196,813
Harmonic cancellation system
Inventor:
John B. Kammeter
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Feb 14, 1994
Inventor
John B. Kammeter
Assignee (at issue)
POWER DISTRIBUTION, 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.