Granted Patent
Utility
US 6,283,277 · App. 09/354,207
Self-propelled, mobile articulated tramming haulage conveyor system for mining operations
Inventors:
Gregory W. Smith, Frank N. Kent, William J. Peters
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jul 15, 1999
Inventors
Gregory W. Smith
Frank N. Kent
William J. Peters
Assignee (at issue)
Amvest Systems Inc.
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.