Granted Patent
Utility
US 4,561,424 · App. 06/756,541
Nontracking parabolic solar energy collector apparatus
Inventors:
Michael T. Gill, Mark C. Rogers
Patented Case
View Patent ↗
Granted: Dec 31, 1985
Filed: Jul 19, 1985
Inventors
Michael T. Gill
Mark C. Rogers
Assignee (at issue)
Advanced Solar Systems
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.