Granted Patent
Utility
US 5,449,758 · App. 08/160,670
Protein size marker ladder
Inventor:
James L. Hartley
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Dec 2, 1993
Inventor
James L. Hartley
Assignee (at issue)
LIFE 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.