Granted Patent
Utility
US 5,613,930 · App. 08/497,120
Device for extracting, storing and handling drill bit cassettes
Inventors:
David C. Chrisman, Gary John Emrhein
Patented Case
View Patent ↗
Granted: Mar 25, 1997
Filed: Jun 30, 1995
Inventors
David C. Chrisman
Gary John Emrhein
Assignee (at issue)
LUCENT TECHNOLOGIES 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.