About: http://webisa.webdatacommons.org/363559886

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	U.S. Pat. No. 3,958,235, which issued to F. A. Duffy, discloses a light emitting diode display apparatus wherein a plurality of diodes mounted in a row on a vibrating member are used to create a display for various types of signals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com