Granted Patent
Utility
US 5,091,685 · App. 07/423,907
Method and apparatus for controlling the shuttle of a storage and retrieval machine
Inventors:
B. Chuck Sorensen, Craig Devroy
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Oct 19, 1989
Inventors
B. Chuck Sorensen
Craig Devroy
Assignee (at issue)
Harnischfeger Engineers, 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.