Granted Patent
Utility
US 5,913,288 · App. 09/046,463
Dual drum boiler
Inventors:
James L. Mickel, Roderick G. Strohl, Glenn R. Sward
Patented Case
View Patent ↗
Granted: Jun 22, 1999
Filed: Mar 23, 1998
Inventors
James L. Mickel
Roderick G. Strohl
Glenn R. Sward
Assignee (at issue)
BURNHAM HOLDINGS, INC.
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.