Granted Patent
Utility
US 4,414,923 · App. 06/353,129
Heat recovery boiler for high pressure gas
Inventors:
Denis G. Csathy, Robert James Krowech
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Mar 1, 1982
Inventors
Denis G. Csathy
Robert James Krowech
Assignee (at issue)
Deltak 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.