#USPTO: 01.15.08 - Teardrop (a single drop), Single drop (rain, tear, etc.), Raindrop (a single drop) #Kreise mit einer oder mehreren Ziffern #Kreise mit kreisförmig angeordneten Inschriften #USPTO: 28.01.05 - Omega (Greek letter), Russian characters (Cyrillic), Cyrillic characters (Russian), Greek characters, Alpha (Greek letter), Inscriptions in Greek and Cyrillic characters #USPTO: 28.01.25 - Inscriptions in other non-Latin characters, including Hieroglyphic characters, Inscriptions in other non-Latin characters, Hieroglyphic characters