The patent system of the United States so far as it relates to the granting of patents: a history
An administrative history of the United States Patent Office and its procedures for granting patents, written by Levin H. Campbell and printed in Washington, D.C., in 1891 for officials, attorneys, and inventors. Illustrations include wood-engraved views of the Patent Office building, floor plans keyed by department, and pen-and-ink portraits of commissioners; useful for Greek Revival facades, hatched line portraiture, and plan diagrams.
