Granted Patent
Utility
US 6,138,658 · App. 09/267,453
Concrete cutting chain with sealed joints
Inventor:
Don A. Bell
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Mar 12, 1999
Inventor
Don A. Bell
Assignee (at issue)
Blount, 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.