Granted Patent
Utility
US 5,519,212 · App. 08/381,159
Tapping atomic force microscope with phase or frequency detection
Inventors:
Virgil B. Elings, John A. Gurley
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Jan 31, 1995
Inventors
Virgil B. Elings
John A. Gurley
Assignee (at issue)
Digital Instruments, 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.