Granted Patent
Utility
US 6,626,557 · App. 09/474,264
Multi-colored industrial signal device
Inventor:
Kenneth Taylor
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: Dec 29, 1999
Inventor
Kenneth Taylor
Assignee (at issue)
SPX 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.