Granted Patent
Utility
US 4,728,476 · App. 06/791,505
Method of supplying a moldable mixture of materials to an article forming mold of an injection molding machine
Inventors:
Douglas J. Boring, Richard V. Reib
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Oct 25, 1985
Inventors
Douglas J. Boring
Richard V. Reib
Assignee (at issue)
Resin Stretchers
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.