Granted Patent
Utility
US 4,801,911 · App. 07/095,549
Selective magnetic lifting system
Inventor:
Graham W. Batts
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Sep 11, 1987
Inventor
Graham W. Batts
Assignee (at issue)
White Consolidated Industries, 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.