Granted Patent
Utility
US 5,190,147 · App. 07/700,627
Tensioning car for flexible continuous tram
Inventor:
John Pennington
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: May 15, 1991
Inventor
John Pennington
Assignee (at issue)
General Chemical Company
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.