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- Harris, Charles R.
Country City North Windham CT
Symbol animal, plant
Era c.1915
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- Harrison Jewelry Co.
Country City Attleboro MA
Era c.1922
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- Harry, Emanuel
Country City London
Era c.1860
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- Hart Bros., Inc.
Country City Newark NJ
Era c.1922
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- Hart Co., D.A.
Country City Attleboro MA
Symbol heart
Shape heart
Era c.1915
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- Hart Jewelry Co.
Country City Chicago IL
Symbol cartouche, frame, heart
Shape cartouche, frame, heart
Era c.1915, c.1934
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- Hart, Andreas
Country Era 1867-1922
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
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- Hart, Fa. C.P. ‘t (“Artifex”)
Country City Den Haag
Symbol cartouche, frame, octagon, plus +, rectangle, square
Shape cartouche, frame, octagon, rectangle, square
Era early 20th century
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- Hart, George
Country City Campden
Symbol cartouche, frame, rectangle
Shape cartouche, frame, rectangle
Era b. 1882
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- Harteveldt Co., Henry H.
Country City New York NY
Era c.1943
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- Hartl, August
Country Era 1867-1922
Symbol cartouche, dot ., frame, rectangle, v clipped
Shape cartouche, frame, rectangle, v clipped
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- Hartl, Karl
Country Era 1867-1922
Symbol cartouche, frame, line, rectangle
Shape cartouche, frame, rectangle
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- Hartman & Co., Harry
Country City Los Angeles CA
Era c.1943
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- Hartman, AL. F.
Country City Kalamazoo MI
Symbol heart, man
Shape heart
Era c.1915
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- Hartman, J.J.
Country City Schoonhoven
Symbol asterisk *, cartouche, frame, hexagon, star
Shape cartouche, frame, hexagon, star
Era early 20th century
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- Hartmann, Josef
Country Era 1867-1922
Symbol cartouche, dash or hyphen -, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle