Granted Patent
Utility
US 4,585,116 · App. 06/700,429
Sludge collector flight, wear shoe and guide lug assembly
Inventor:
Charles J. Albrecht, III
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Feb 11, 1985
Inventor
Charles J. Albrecht, III
Assignee (at issue)
Dresser 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.