Granted Patent
Utility
US 4,643,463 · App. 06/698,693
Gimbal joint for piping systems
Inventors:
Horace P. Halling, Se Jin Oh
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Feb 6, 1985
Inventors
Horace P. Halling
Se Jin Oh
Assignee (at issue)
Pressure Science Incorporated
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.