Granted Patent
Utility
US 6,575,989 · App. 09/659,099
Adjustable stiffness membrane scraper
Inventors:
Gregg D. Scheller, Michael D. Auld, Christopher F. Lumpkin
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Sep 11, 2000
Inventors
Gregg D. Scheller
Michael D. Auld
Christopher F. Lumpkin
Assignee (at issue)
Synergetics, 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.