Granted Patent
Utility
US 4,522,248 · App. 06/409,358
Segmented mold weight and combination with mold jacket
Inventor:
Wilmer J. Friesen
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Aug 19, 1982
Inventor
Wilmer J. Friesen
Assignee (at issue)
Vulcan Engineering Company
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.