Granted Patent
Utility
US 6,491,057 · App. 09/631,369
Method and device for installing an air tap onto a pressurized air pipe
Inventor:
James Christopher Collins
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Aug 2, 2000
Inventor
James Christopher Collins
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.