Granted Patent
Utility
US 4,514,531 · App. 06/540,241
Monolithic refractories comprising a hydrocolloid
Inventors:
Thomas R. Kleeb, Linda L. Kleeb
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Oct 11, 1983
Inventors
Thomas R. Kleeb
Linda L. Kleeb
Assignee (at issue)
Dresser Industries, Inc.
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.