Granted Patent
Utility
US 6,181,422 · App. 09/038,308
Optical surface measurement apparatus and methods
Inventor:
J. Andrew Veltze
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Mar 11, 1998
Inventor
J. Andrew Veltze
Assignee (at issue)
Brown & Sharpe Limited
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.