Granted Patent
Utility
US 6,010,450 · App. 09/106,616
Measuring adapter for viewing instrument
Inventor:
David G. Perkins
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Jun 29, 1998
Inventor
David G. Perkins
Assignee (at issue)
Welch Allyn, 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.