Granted Patent
Utility
US 4,867,300 · App. 07/154,942
Round link chain for chain scraper conveyors
Inventors:
Gert Braun, Ernst Braun
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Feb 11, 1988
Inventors
Gert Braun
Ernst Braun
Assignee (at issue)
Halbach and Braun Industrieanlagen
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.