Granted Patent
Utility
US 5,113,951 · App. 07/713,410
Apparatus for driving a drilling or percussion tool
Inventors:
J. P. Houben, A. J. Moolenaar
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Jun 11, 1991
Inventors
J. P. Houben
A. J. Moolenaar
Assignee (at issue)
Emerson Electric Co.
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.