Granted Patent
Utility
US 6,557,577 · App. 09/885,322
Threaded union safety device and method
Inventors:
Bobby Corte, Jr., Durell Kraemer
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Jun 19, 2001
Inventors
Bobby Corte, Jr.
Durell Kraemer
Assignee (at issue)
Cor-Val, Inc.
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.