Granted Patent
Utility
US 5,645,381 · App. 08/304,987
Variable-split blowdown coal feed system
Inventors:
Robert Henry Guidetti, Douglas B. Sheppard
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Sep 13, 1994
Inventors
Robert Henry Guidetti
Douglas B. Sheppard
Assignee (at issue)
TRW Limited
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.