Appellant, in the exercise of its expertise, followed the over-all judicial philosophy expressed in Campana Corporation v. Harrison, 114 F.2d 400 (7th Cir. 1940) and E. Albrecht & Son, Inc. v. Landy, 114 F.2d 202 (8th Cir. 1940), for a great many years. On the record before us, we decline to distinguish those cases and thus permit appellant to abandon its own interpretation of the statute as applied to the appellee.

Affirmed.