Granted Patent
Utility
US 5,967,410 · App. 09/224,223
Thermal relief valve
Inventor:
Daniel A. Lammers
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Dec 30, 1998
Inventor
Daniel A. Lammers
Assignee (at issue)
Control Devices, LLC
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.