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American dental patents: a vindication of the truth of certain articles in the American journal of dental science, entitled a "Sketch of American dental patents", and a refutation of the charges made against them, by the Dental register : a notice of the action of the Mississippi Valley Association and Ohio College of Dental Surgery, on the subject of patenting professional improvements
American dental patents: a vindication of the truth of certain articles in the American journal of dental science, entitled a "Sketch of American dental patents", and a refutation of the charges made against them, by the Dental register : a notice of the action of the Mississippi Valley Association and Ohio College of Dental Surgery, on the subject of patenting professional improvements