Granted Patent
Utility
US 5,451,857 · App. 07/945,236
Temperature compensated, regulated power supply and battery charger for railroad signal use
Inventor:
James E. Moe
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Sep 15, 1992
Inventor
James E. Moe
Assignee (at issue)
Safetran Systems 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.