Granted Patent
Utility
US 4,726,430 · App. 06/673,617
Device for driving a drilling and/or impacting tool
Inventors:
Wilhelmus J. M. Hendrikx, Antonie J. Moolenaar, Jan P. Houben
Patented Case
View Patent ↗
Granted: Feb 23, 1988
Filed: Nov 21, 1984
Inventors
Wilhelmus J. M. Hendrikx
Antonie J. Moolenaar
Jan P. Houben
Assignee (at issue)
Skil Corporation
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.