Granted Patent
Utility
US 5,934,971 · App. 08/958,836
Fiber optic deadman control
Inventors:
Bob Thompson, Phuong Taylor Nguyen
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Oct 28, 1997
Inventors
Bob Thompson
Phuong Taylor Nguyen
Assignee (at issue)
United States Filter 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.