Granted Patent
Utility
US 5,250,921 · App. 07/600,199
Field assembly for an electromagnet
Inventors:
Kalvin G. Van Laningham, Mark E. Blakeman, Dwight E. Booth, John C. Carlson, Douglas J. Clemens, Stewart B. Dobson, Robert D. Keller
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Oct 19, 1990
Inventors
Kalvin G. Van Laningham
Mark E. Blakeman
Dwight E. Booth
John C. Carlson
Douglas J. Clemens
Stewart B. Dobson
Robert D. Keller
Assignee (at issue)
DANA LIMITED
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.