Granted Patent
Utility
US 6,134,815 · App. 09/248,344
Monitoring device for motor-driven underwater grab bucket dredge gear
Inventor:
Wolfgang Rohr
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Feb 11, 1999
Inventor
Wolfgang Rohr
Assignee (at issue)
ROHR, 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.