Granted Patent
Utility
US 6,327,942 · App. 09/636,431
Multiple bit driver
Inventors:
James F. Mariol, Howard Nicholas Ragland
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Aug 10, 2000
Inventors
James F. Mariol
Howard Nicholas Ragland
Assignee (at issue)
Lutz File & Tool 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.