Granted Patent
Utility
US 4,293,276 · App. 05/955,332
Laminated composite rotor yoke
Inventors:
Vas H. Brogdon, David L. Williams
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Oct 27, 1978
Inventors
Vas H. Brogdon
David L. Williams
Assignee (at issue)
Textron Inc.
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.