Granted Patent
Utility
US 5,501,285 · App. 08/276,137
Method for controlling the head of a drilling or core-drilling device and apparatus for carrying out this method
Inventors:
Etienne Lamine, Kees Langeveld
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Jul 18, 1994
Inventors
Etienne Lamine
Kees Langeveld
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.