Granted Patent
Utility
US 5,471,909 · App. 08/280,532
Fluid cylinder
Inventor:
Jacob Kobelt
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jul 26, 1994
Inventor
Jacob Kobelt
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.