Granted Patent
Utility
US 6,446,519 · App. 09/487,364
Electric actuator
Inventor:
Klaus Biester
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jan 19, 2000
Inventor
Klaus Biester
Assignee (at issue)
Cooper Cameron 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.