Granted Patent
Utility
US 4,440,122 · App. 06/349,054
Model airplane engine starter
Inventor:
Roger D. Theobald
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Feb 16, 1982
Inventor
Roger D. Theobald
Assignee (at issue)
Cox Hobbies, 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.