Granted Patent
Utility
US 4,435,665 · App. 06/390,269
Thermal linear actuator
Inventor:
Kent Farrell
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Jun 21, 1982
Inventor
Kent Farrell
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.