Granted Patent
Utility
US 4,892,205 · App. 07/219,731
Concentric ribbed preform and bottle made from same
Inventors:
Thomas F. Powers, William G. Kinslow
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Jul 15, 1988
Inventors
Thomas F. Powers
William G. Kinslow
Assignee (at issue)
Hoover Universal, 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.