Granted Patent
Utility
US 4,475,886 · App. 06/471,368
Lifter for rotary kiln
Inventor:
Gary A. Tyler
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Mar 1, 1983
Inventor
Gary A. Tyler
Assignee (at issue)
Kaiser Aluminum & Chemical 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.