Granted Patent
Utility
US 4,239,034 · App. 05/925,777
Solar energy collector
Inventor:
William P. Niedermeyer
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Jul 18, 1978
Inventor
William P. Niedermeyer
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.