opinion: ANDERSON, Circuit Judge.
  These appeals were heard together on one record. The claims relied on in No. 3566 are 1, 2, 3, and 4 of patent No. 1,287,576, in No. 3567 1 to 8 of patent. No. 1,303,542, and in No. 3568 1, 2, 3, 4, 5, 6, 7, 8, 9,10,17, and 18 of patent No. 1,303,543, all"issued to the appellant as assignee of Herman De Vry. The court below dismissed all the bills for want of equity.
  . The patents relate to motion picture projectors, and have for their object the production of a kind of projector known as the suit case, or self-contained, type. Appellant contends that “the patents in suit are for the first successfully self-contained, or suit case, portable projector.” All of the elements of the claims are old. The invention is said to reside in the combination of those elements. The insistence is that De Vry was the first p.erson to successfully put these elements into a practicable portable container.- Each element functions in the container just as it does when not in a container. The bringing together of these elements and arranging them so that they are ready, while in the container, to perform their old and well-known functions, is not invention. It is mere aggregation.
  The deeree is affirmed.
instruction: What follows is an opinion from a United States Court of Appeals.
  Intervenors who participated as parties at the courts of appeals should be counted as either appellants or respondents when it can be determined whose position they supported. For example, if there were two plaintiffs who lost in district court, appealed, and were joined by four intervenors who also asked the court of appeals to reverse the district court, the number of appellants should be coded as six.
  When coding the detailed nature of participants, use your personal knowledge about the participants, if you are completely confident of the accuracy of your knowledge, even if the specific information is not in the opinion. For example, if "IBM" is listed as the appellant it could be classified as "clearly national or international in scope" even if the opinion did not indicate the scope of the business. 
  
  Your task concerns the first listed appellant. The nature of this litigant falls into the category "private business (including criminal enterprises)", specifically "unclear". Your task is to determine what subcategory of business best describes this litigant.
choices: auto industry chemical industry drug industry food industry oil & gas industry clothing & textile industry electronic industry alcohol and tobacco industry other unclear