Granted Patent
Utility
US 6,325,579 · App. 09/641,548
Lift assist mechanism for railroad car deck
Inventor:
James Jarvis
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Aug 17, 2000
Inventor
James Jarvis
Assignee (at issue)
Gunderson 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.