Specifications of patents relating to the telephone and secondary batteries, etc.,
1878-1893.
APA Citation
United States. Patent Office. (18781893). Specifications of patents relating to the telephone and secondary batteries, etc.: 1878-1893. Washington.
MLA Citation
United States. Patent Office. Specifications of Patents Relating to the Telephone And Secondary Batteries, Etc.: 1878-1893. Washington, 18781893.
Warning: These citations may not always be complete (especially for serials).