Granted Patent
Utility
US 5,898,499 · App. 08/792,172
Method and apparatus for detecting surface discontinuities based on changes in an optical path length during beam scanning
Inventor:
Jason L. Pressesky
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jan 30, 1997
Inventor
Jason L. Pressesky
Assignee (at issue)
Seagate Technology LLC
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.