Granted Patent
Utility
US 4,442,739 · App. 06/390,178
Multi-spindle work transfer device
Inventors:
Sven Swanson, Richard G. Swanson
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Jun 21, 1982
Inventors
Sven Swanson
Richard G. Swanson
Assignee (at issue)
Litton Industrial Products, 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.