Granted Patent
Utility
US 5,856,791 · App. 08/658,238
Port expander for utility meter reading
Inventors:
Bruce E. Gray, Timothy J. Belski
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Jun 4, 1996
Inventors
Bruce E. Gray
Timothy J. Belski
Assignee (at issue)
M&FC Holding, LLC
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.