Granted Patent
Utility
US 4,236,870 · App. 05/864,194
Turbine blade
Inventors:
Elias Hucul, Jr., Robert E. Gladden
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Dec 27, 1977
Inventors
Elias Hucul, Jr.
Robert E. Gladden
Assignee (at issue)
UNITED TECHNOLOGIES CORPORATION
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.