Granted Patent
Utility
US 4,076,779 · App. 05/601,086
Method of restoring the fluid permeability of a used, ceramic fluid-release mold
Inventor:
Rudolph A. Skriletz
Patented Case
View Patent ↗
Granted: Feb 28, 1978
Filed: Aug 1, 1975
Inventor
Rudolph A. Skriletz
Assignee (at issue)
Wallace Murray 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.