Granted Patent
Utility
US 4,393,087 · App. 06/259,882
Process for the production of a floating aquatic food pellet
Inventors:
Richard Don Sullins, Kent J. Lanter
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: May 4, 1981
Inventors
Richard Don Sullins
Kent J. Lanter
Assignee (at issue)
Ralston Purina 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.