Granted Patent
Utility
US 6,405,628 · App. 09/376,137
Method and apparatus for penetrating hard materials
Inventor:
Yeshayahu S. A. Goldstein
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Aug 17, 1999
Inventor
Yeshayahu S. A. Goldstein
Assignee (at issue)
Apti Inc.
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.