Granted Patent
Utility
US 4,359,086 · App. 06/264,519
Heat exchange surface with porous coating and subsurface cavities
Inventors:
Duane F. Sanborn, John L. M. Holman, Chester D. Ware
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: May 18, 1981
Inventors
Duane F. Sanborn
John L. M. Holman
Chester D. Ware
Assignee (at issue)
The Trane Company
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.