Granted Patent
Utility
US 6,799,641 · App. 10/600,470
Percussive drill with adjustable flow control
Inventors:
Leland H. Lyon, Warren T. Lay, Jeffrey White
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Jun 20, 2003
Inventors
Leland H. Lyon
Warren T. Lay
Jeffrey White
Assignee (at issue)
Atlas Copco AB
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.