Granted Patent
Utility
US 5,454,031 · App. 08/400,549
Dial inbound meter interface unit which derives its power from a telephone line
Inventors:
Bruce E. Gray, Donald R. Fletcher
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Mar 8, 1995
Inventors
Bruce E. Gray
Donald R. Fletcher
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.