Granted Patent
Utility
US 4,759,553 · App. 06/822,740
Dynamic rotary face seal
Inventors:
James R. Goodman, Stephen Sekulich, Terry Mitchell Lewis, Dean R. Bainard, Dick L. Kanitz
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Jan 27, 1986
Inventors
James R. Goodman
Stephen Sekulich
Terry Mitchell Lewis
Dean R. Bainard
Dick L. Kanitz
Assignee (at issue)
Fluorocarbon Company
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.