Granted Patent
Utility
US 5,100,607 · App. 07/400,140
Blow-molding methods to form containers having upper and lower sections of different thicknesses
Inventor:
Edward S. Robbins, III
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Apr 29, 1989
Inventor
Edward S. Robbins, III
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.