Granted Patent
Utility
US 6,225,621 · App. 09/307,110
Laser photoelectric sensor
Inventors:
John Doyle Rogers, Steven H. Mersch
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: May 7, 1999
Inventors
John Doyle Rogers
Steven H. Mersch
Assignee (at issue)
Automatic Timing & Controls, 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.