Granted Patent
Utility
US 6,795,319 · App. 09/811,668
Intrinsically safe portable programmer for enclosed electronic process control equipment
Inventors:
Nigel Ashley Preston, Robert W. Gray
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Mar 20, 2001
Inventors
Nigel Ashley Preston
Robert W. Gray
Assignee (at issue)
Siemens Milltronics Process Instruments, 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.