Granted Patent
Utility
US 4,368,648 · App. 06/162,298
Hand brake for railroad car
Inventors:
Richard J. Housman, Wajih Kanjo
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Jun 23, 1980
Inventors
Richard J. Housman
Wajih Kanjo
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.