Granted Patent
Utility
US 6,672,830 · App. 10/198,182
Vertical pump with oil lubricant; C-seal for pump; and pump with threaded shaft position adjustment
Inventor:
Robert E. Rockwood
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 19, 2002
Inventor
Robert E. Rockwood
Assignee (at issue)
Environamics 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.