Granted Patent
Utility
US 6,095,789 · App. 09/169,114
Adjustable hot sprue bushing
Inventors:
Douglas C. Hepler, Christopher T. Grace, Louis A. Borrelli
Patented Case
View Patent ↗
Granted: Aug 1, 2000
Filed: Oct 8, 1998
Inventors
Douglas C. Hepler
Christopher T. Grace
Louis A. Borrelli
Assignee (at issue)
POLYSHOT 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.