Granted Patent
Utility
US 4,628,441 · App. 06/509,214
Automatic dynamic error compensator
Inventors:
Richard Johnstone, Edward E. Kirkham, Han C. Chung, Lyle D. Ostby
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Jun 29, 1983
Inventors
Richard Johnstone
Edward E. Kirkham
Han C. Chung
Lyle D. Ostby
Assignee (at issue)
Kearney & Trecker 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.