Granted Patent
Utility
US 6,513,627 · App. 09/786,383
Deep level mine shaft hybrid conveyance system
Inventors:
Rupert John Cruise, Charles Landy
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Jul 18, 2001
Inventors
Rupert John Cruise
Charles Landy
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.