Granted Patent
Utility
US 6,360,906 · App. 09/620,983
Slackless railway coupler with buff/draft gear
Inventors:
Horst T. Kaufhold, John J. Steffen
Patented Case
View Patent ↗
Granted: Mar 26, 2002
Filed: Jul 21, 2000
Inventors
Horst T. Kaufhold
John J. Steffen
Assignee (at issue)
AMSTED INDUSTRIES 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.