Granted Patent
Utility
US 5,533,594 · App. 08/255,337
Chairlift with positioning carriage and swivel mechanism with safety interlock
Inventors:
Jules Tremblay, David C. Balmer, Helmut Ruff
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Jun 7, 1994
Inventors
Jules Tremblay
David C. Balmer
Helmut Ruff
Assignee (at issue)
Ricon Corp.
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.