Granted Patent
Utility
US 4,242,026 · App. 05/939,781
Self-unloading ship with suspended reclaim scraper
Inventors:
Warren R. Vaughan, Matthieu Suykens
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Sep 5, 1978
Inventors
Warren R. Vaughan
Matthieu Suykens
Assignee (at issue)
Allis-Chalmers Canada 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.