Wiborg Jenssen were a company that produced fuel cells, and had a logo consisting of a triple of the letter s. After being stolen from Imperial Governor Wilhuff Tarkin by a rebel cell, the vessel Carrion Spike picked up a batch of Wiborg Jenssen fuel cells at a tanker facility in the Phindar system. The Phindian administrator of the facility placed a homing beacon in one of the cells, which the leader of the cell, Berch Teller realized, and asked another member named Cala to find. The Empire also used Wiborg Jenssen fuel cells in the Sienar Fleet Systems TIE Advanced x1, including Darth Vader's own personal starfighter used during the Battle of Yavin.
Wiborg Jenssen were first mentioned in the Star Wars Legends sourcebook Star Wars: Incredible Cross-Sections which was written by David West Reynolds and released in 1998. They were then brought into canon by the James Luceno novel Tarkin, which was released in 2014.
- Star Wars Complete Vehicles, New Edition