Granted Patent
Utility
US 3,947,176 · App. 05/491,063
Double injection mold with neck gating
Inventor:
Dewey Rainville
Patented Case
View Patent ↗
Granted: Mar 30, 1976
Filed: Jul 23, 1974
Inventor
Dewey Rainville
Assignee (at issue)
Rainville Co., 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.