Page:Copyright Office Compendium 3rd Edition - Full.djvu/570

, Third Edition 923. 2(B) Functional Features 37

923.2(C) Building Designs Created Before December 1, 1990 37

923.3 Application Tips for Architectural Works 38

924 Registration Requirements for Useful Articles 38

924.1 What Is a Useful Article? 39

924.2 Separability Tests for Useful Articles 39

924.2 (A) Physical Separability 40

924.2(B) Conceptual Separability 40

924.2(C) Factors Not Relevant in Evaluating Separability 41

924.3 Specific Types of Useful Articles 41

924.3(A) Clothing Designs 41

924.3(A)(1) Fabric and Textile Designs Embodied in Clothing or Other Useful Articles 42

924.3(A)(2) Costumes 42

924.3(A)(3) Decorative Masks 43

924.3(B) Blank Forms 43

924.3(C) Measuring and Computing Devices 44

924.3 (D) X-Rays, Medical Imaging, and Non-Medical Echo Sonography 45

Chapter 900 : 3

12/22/2014 Chapter _00 : 3