Granted Patent
Utility
US 5,621,814 · App. 08/327,492
Image recognition apparatus capable of inspecting height and method for inspecting height by using two slit incident beams of light
Inventor:
Motoharu Honda
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Oct 21, 1994
Inventor
Motoharu Honda
Assignee (at issue)
NEC CORPORATION
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.