Granted Patent
Utility
US 6,135,417 · App. 09/297,704
Valve spindle actuator
Inventors:
Martin James Wadsworth, Stephen Leslie Foster
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Jul 16, 1999
Inventors
Martin James Wadsworth
Stephen Leslie Foster
Assignee (at issue)
EJA Engineering 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.