010905, 011524, 150701, 241725, 260109, 260111, 260128, 260715, 260721, 261513, 261709, 261925, 2801 - Atoms or molecular models. Sound waves, including designs depicting sound. Cog wheels (wheels with teeth), gears, several wheels in juxtaposition. Other notational signs and symbols, including pH, hazardous materials symbols, degree sign(�), pound sign(#), equal signs(=), and other mathematical symbols. Geometric figures, objects, humans, plants or animals forming or bordering the perimeter of a circle. Letters, numerals, punctuation, geometric figures, objects, humans, plants or animals comprising a circle. Miscellaneous circular designs with an irregular circumference. Four or more diamonds. Diamonds that are completely or partially shaded. More than one polygon. Curved line(s), band(s) or bar(s). Other geometric solids. Inscriptions in Greek characters, including the following: Α α Β β Γ γ Δ δ Ε ε Ζ ζ Η η Θ θ Ι ι Κ κ Λ λ Μ μ Ν ν Ξ ξ Ο ο Π π Ρ ρ ς Σ σ Τ τ Υ υ Φ φ Χ χ Ψ ψ Ω ω.