Granted Patent
Utility
US 6,543,747 · App. 09/725,087
Valve actuator apparatus
Inventors:
David W. Buchwald, Purushottam Savalia
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Nov 29, 2000
Inventors
David W. Buchwald
Purushottam Savalia
Assignee (at issue)
Henry Pratt 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.