Granted Patent
Utility
US 4,250,513 · App. 06/077,001
Linear vertical adjustment mechanism
Inventors:
James L. Harlow, Ward L. Karns
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Sep 19, 1979
Inventors
James L. Harlow
Ward L. Karns
Assignee (at issue)
General Electric Company
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.