vactrol造句

• In 1967 Vactec introduced a compact RO branded as Vactrol.
• As of 2012, the Vactrol ROs were produced by PerkinElmer, the successor Vactec.
• The fourth and fifth units in the bottom row are low-pass filters that use Vactrol ROs.
• The name " Vactrol " was carried over on LED-based devices which are, as of 2010, still produced in small quantities.
• Vactec did not extend their rights to the trademark Vactrol, and it has become a household word in the English language for any RO used in audio equipment, including the ROs of Fender and Gibson.
• According to the USPTO database, the original " Vactrol " granted in 1969 for these opto-isolators to Vactec, Inc . is now dead The same trademark, according to the USPTO, is now owned by someone else and covers a different product [ http : / / tess2 . uspto . gov / bin / showfield ? f = doc & state = 4005 : pnh880.2 . 2.