Granted Patent
Utility
US 4,397,657 · App. 06/369,811
Gas lock system charging particles into a pressurized gasification reactor
Inventors:
Andrew Selep, Yeshwant K. Bhide
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Apr 19, 1982
Inventors
Andrew Selep
Yeshwant K. Bhide
Assignee (at issue)
Allis-Chalmers 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.