Granted Patent
Utility
US 5,226,979 · App. 07/863,810
Apparatus including a shape memory actuating element made from tubing and a means of heating
Inventor:
Paul E. Thoma
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Apr 6, 1992
Inventor
Paul E. Thoma
Assignee (at issue)
Johnson Service Company
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.