Granted Patent
Utility
US 6,311,847 · App. 09/266,037
Method and means for sand reblending
Inventors:
Trenton L. Soldwish-Zoole, Franklin E. Squires
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Mar 11, 1999
Inventors
Trenton L. Soldwish-Zoole
Franklin E. Squires
Assignee (at issue)
HGH Associates, Ltd.
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.