Manufacturer: United Aircraft Products Inc. Dayton, Ohio - Muffinaire
Vintage aluminum muffin pan signed: UAP - United Aircraft Products Inc. Dayton, Ohio - Muffinaire - Patent 1921256 - Pats Pending - Size: 13 x 10 inches, makes twelve muffins, or cupcakes, and has a center hole for hanging, to store or display. Condition: used, surface use scratches, dents. Comments: That patent was filed April 6, 1931 and was granted August 8, 1933 to Theodore M. Hiester of Dayton, Ohio - assignor to United Aircraft Products Inc. also of Dayton. It was called: Multicompartment Tray and method of making the same.

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