Granted Patent
Utility
US 5,431,549 · App. 08/017,204
Bidirectional aspetic volume filler
Inventors:
Ian M. Vokins, James B. Abbott
Patented Case
View Patent ↗
Granted: Jul 11, 1995
Filed: Feb 12, 1993
Inventors
Ian M. Vokins
James B. Abbott
Assignee (at issue)
FMC CORPORATION
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.