Granted Patent
Utility
US 4,490,635 · App. 06/442,129
Pure torque, limited displacement transducer
Inventors:
Joel N. Harrison, Donald V. Daniels, David A. Brown
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Nov 16, 1982
Inventors
Joel N. Harrison
Donald V. Daniels
David A. Brown
Assignee (at issue)
Quantum Corporation
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.