Granted Patent
Utility
US 6,158,373 · App. 09/352,432
Traveler car with recirculating ball bearings and bearing retainer
Inventors:
Kenneth E. Lange, Jonathan D. Malcolm
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Jul 13, 1999
Inventors
Kenneth E. Lange
Jonathan D. Malcolm
Assignee (at issue)
Harken, 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.