Granted Patent
Utility
US 5,094,607 · App. 07/617,184
Thermoplastic mold for rotational molding
Inventor:
William E. Masters
Patented Case
View Patent ↗
Granted: Mar 10, 1992
Filed: Nov 23, 1990
Inventor
William E. Masters
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.