sentences:  In 1976, Littelfuse developed Autofuse, which was the first blade-type fuse used in automobiles.The Autofuse brand was counterfeited heavily and in 1983 the company obtained an exclusionary order from the United States International Trade Commission, which barred the importation of counterfeit blade-type fuses.In 1987, Westmark Systems purchased Tracor and its Littelfuse subsidiary in leveraged buyout.