Granted Patent
Utility
US 4,611,766 · App. 06/748,923
Retainer apparatus for releasably securing a bowl liner in a rock crusher
Inventor:
Dennis D. Seifert
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Jun 26, 1985
Inventor
Dennis D. Seifert
Assignee (at issue)
ESCO GROUP LLC
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.