Henry J. Ruttan, of Cobourg, Canada
Subtitle: improvement in railroad-car ventilators : specification forming part of letters patent no. 123,513 dated February 6, 1872
Publisher: United States Patent Office
Published: 1872
Place of publication: Washington?
Language: eng
Subjects: Railroad cars; Heating and ventilation; Chemins de fer; Wagons; Chauffage et ventilation
Other titles: Improvement in railroad-car ventilators
Notes: Signed: H.J. Ruttan.

At head of title: 123,513. United States Patent Office.

Caption title, from (p. [3]).

Pages [1] and [4] blank.

Illustrations lithographed by Am[erican] Photo-Lithographic Co., N.Y. (Osborne's Process).