Granted Patent
Utility
US 4,236,424 · App. 06/010,447
Hand brake for railway vehicles
Inventors:
Wajih Kanjo, Richard J. Housman, Scott Natschke
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Feb 8, 1979
Inventors
Wajih Kanjo
Richard J. Housman
Scott Natschke
Assignee (at issue)
American Standard Inc.
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.