Granted Patent
Utility
US 6,575,706 · App. 10/131,419
Vacuum-assisted pump
Inventors:
William B. Carnes, Milton K. Leonard
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Apr 22, 2002
Inventors
William B. Carnes
Milton K. Leonard
Assignee (at issue)
Roper Holdings, 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.