Granted Patent
Utility
US 4,619,414 · App. 06/697,049
Multi-disk refiner
Inventors:
Edward C. Kirchner, Ronald J. Defoe
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Jan 31, 1985
Inventors
Edward C. Kirchner
Ronald J. Defoe
Assignee (at issue)
Beloit 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.