Granted Patent
Utility
US 6,280,149 · App. 09/428,945
Active feedback apparatus and air driven diaphragm pumps incorporating same
Inventors:
Stephen D. Able, Joseph L. Meloche
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Oct 28, 1999
Inventors
Stephen D. Able
Joseph L. Meloche
Assignee (at issue)
Ingersoll-Rand Company
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.