Granted Patent
Utility
US 6,687,939 · App. 09/681,756
Bucket sweeper
Inventor:
Jay Koester
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: May 31, 2001
Inventor
Jay Koester
Assignee (at issue)
Attachment Technologies, 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.