Granted Patent
Utility
US 4,946,512 · App. 07/326,678
Solar energy collector device
Inventors:
Takeo Fukuroi, Shinichirou Yoshida, Akira Ohmura
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Mar 21, 1989
Inventors
Takeo Fukuroi
Shinichirou Yoshida
Akira Ohmura
Assignee (at issue)
Yoshida Kogyo K.K.
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.