Trademark distinctiveness both concepts, see Apple Corps and its disputes with Apple, Inc. If a court rules that a trademark has become "generic" through common use (such that the mark no longer performs the essential trademark function and the average consumer no longer considers that exclusive rights attach to it), the corresponding registration may also be ruled invalid. For example, the Bayer company's trademark "Aspirin" has been ruled generic in the United States, so other companies may use that name for acetylsalicylic acid as well (although it is still a trademark in Canada). Xerox for photocopiers and Band-Aid for adhesive bandages are
A. C. and Mamie Forehand A. C. and Mamie Forehand A. C. (also, "Asey" or "Asa") Forehand and (Blind) Mamie Forehand were husband and wife American gospel musicians. They recorded four songs for Victor Records in 1927. A. C. is credited with the two songs recorded on February 25, and Mamie with the two recorded on February 28according to which one of them sang, but both played on all four: A. C. guitar and harmonica, Mamie an instrument variously identified as triangle or finger cymbals. A. C. was born in Columbus, Georgia on August 9, 1890 (according to his second wife, Frances) or 1893 (according