Granted Patent
Utility
US 6,375,573 · App. 09/918,690
Method and apparatus for transferring drilling energy to a cutting member
Inventor:
Jack W. Romano
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Jul 30, 2001
Inventor
Jack W. Romano
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.