Granted Patent
Utility
US 4,407,987 · App. 06/315,370
Polymeric resins and blends with high packing densities
Inventors:
Zenas Crocker, David V. Wise
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Oct 27, 1981
Inventors
Zenas Crocker
David V. Wise
Assignee (at issue)
Synergistics Chemicals Ltd.
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.