Granted Patent
Utility
US 4,922,081 · App. 07/248,395
Control system and method of making the same
Inventors:
Brian J. Kadwell, Daniel L. Fowler
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Sep 23, 1988
Inventors
Brian J. Kadwell
Daniel L. Fowler
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.