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- Connell & Co.
Country Era c.1839
Symbol clover
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- Conradi, Therese
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Continental Jewelry Co.
Country City Buffalo NY
Era c.1934
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- Cook, David N.
Country City Salem MA
Era c.1896
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- Cooke Co., C.H.
Country City Providence RI
Symbol banner, crest, laurel, wreath
Shape crest, shield
Era c.1896, c.1915
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- Cooke, Harding Chain Co.
Country City Attleboro MA
Era c.1934
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- Cooke, Joseph
Country City Philadelphia PA
Era c. 1784
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- Cooper & Forman
Country City New York NY
Era c.1896, c.1915
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- Cooper, F.J.
Country City Philadelphia PA
Symbol cartouche, diamond, frame
Shape cartouche, diamond, frame
Era c.1946
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- Cooper, John Paul
Country City Birmingham
Symbol cartouche, frame, oval
Shape cartouche, frame, oval
Era (1869-1933)
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- Cooperman & Co., Arthur J.
Country City New York NY
Era c.1950, c.1943
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- Cooperman, Marilyn F.
Country City New York NY
Era e.1994
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- Copeland, Elizabeth
Country Era 1866-1957
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- Corbett & Bertolone Inc.
Country City New York NY
Era c.1934 c.1950, c.1943
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- Corbin, D.R.
Country City New York NY
Symbol cartouche, frame, lozenge, rhombus
Shape cartouche, frame, lozenge, rhombus
Era c.1896, c.1915
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- Cordang, G.H.H.
Country City Den Bosch
Symbol cartouche, frame, plus +, rectangle, square
Shape cartouche, frame, rectangle, square
Era early 20th century