Russwin elevator door controller (patented)
By: made by Russell & Erwin Mfg. Co
Publisher: Russell & Erwin Mfg. Co.
Published: 1910
Place of publication: New York, N.Y.?]
Language: eng
Subjects: Catalogs; Elevators; Hardware; Russell and Erwin Manufacturing Company
Other titles: Elevator door controller
Notes: Cover title.

Includes plans with specifications and prices.