Granted Patent
Utility
US 6,623,084 · App. 09/889,662
Mounting of a rotatable chisel in mining machinery
Inventor:
Zenon Wasyleczko
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Sep 19, 2001
Inventor
Zenon Wasyleczko
Assignee (at issue)
Boart Longyear GmbH & Co. KG
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.