Granted Patent
Utility
US 4,724,826 · App. 06/907,360
Solar water heater incorporating heat pipe
Inventor:
Toshiaki Muramatsu
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Sep 15, 1986
Inventor
Toshiaki Muramatsu
Assignee (at issue)
Showa Aluminum Corp.
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.