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- B. & O. Chain Co., Inc.
Country City Providence RI
Era c.1943
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- Baum & Oppenheim
Country City New York NY
Symbol cartouche, circle, frame
Shape cartouche, circle, frame
Era c.1896, c.1904, c.1915, c.1922
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- Clarke & Oswald Co.
Country City Newark NJ
Symbol cartouche, frame, horseshoe
Shape cartouche, frame
Era c.1922
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- Fonsèque et Olive
Country City Paris
Symbol cartouche, diamond, frame, lozenge, rhombus
Shape cartouche, diamond, frame, lozenge, rhombus
Era e.1885
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- Gindrich, Otto V.
Country Era 1867-1922
Symbol cartouche, frame, rectangle, v clipped
Shape cartouche, frame, rectangle, v clipped
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- Hirsch & Oppenheimer
Country City Chicago IL
Symbol circle
Shape circle
Era c.1950, c.1943
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- Katz & Ogush Inc.
Country City New York NY
Symbol cartouche, frame, oval, ribbon, square
Shape cartouche, frame, oval, square
Era c.1934, c.1950, c.1943
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- O’Lessker, R.
Country City Philadelphia PA
Era c.1943
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- O’Neil, J. Richard
Country City Boston MA
Symbol ring
Era c.1934
-
- Oakes, Edward Everett
Country City Boston MA
Symbol acorns, cartouche, frame, leaf
Shape cartouche, frame
Era e. 1917
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- Oberman, Herbert L.
Country City New York NY
Era c.1950
-
- Obiols, Gustave
Country City Paris
Era fl.c.1900
-
- Ockers, H.F.
Country City Amsterdam
Symbol cartouche, frame, hexagon
Shape cartouche, frame, hexagon
Era early 20th century
-
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- Odenheimer & Co., Zimmern
Country City New York NY
Shape badge, emblem, shield
Symbol badge, banner, emblem, shield
Era c.1896, c.1915
-
- Oertel, Johann
Country Era 1867-1922
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
