Granted Patent
Utility
US 5,167,898 · App. 07/847,664
Injection mold assembly and method for manufacturing a plastic tub with holes
Inventor:
LeRoy D. Luther
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Mar 5, 1992
Inventor
LeRoy D. Luther
Assignee (at issue)
Triangle Tool 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.