Granted Patent
Utility
US 5,937,072 · App. 08/811,120
Audio crossover circuit
Inventor:
Christopher Combest
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Mar 3, 1997
Inventor
Christopher Combest
Assignee (at issue)
Multi Service 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.