This invention relates to a radiator fin formed by sintering operation, which comprises a base board formed by means of powder metallurgical sintering and a radiator fin formed by the bent metal sheet. The base board has a plurality of equidistant trenches. The radiator fin is bent in the form of continued...http://www.google.ca/patents/US6681847?utm_source=gb-gplus-sharePatent US6681847 - Radiator fin formed by sintering operation
