Granted Patent
Utility
US 6,572,311 · App. 09/910,820
Two-piece drill bits
Inventor:
Kailash C. Vasudeva
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jul 24, 2001
Inventor
Kailash C. Vasudeva
Assignee (at issue)
Maxtech Manufacturing 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.