[NV14054], Technical Note, Charles Batchelor, March 6th, 1878

Item

Abstract

Carbon button in telephone

Date

1878-03-06

Decade

1870-1879

Subject

Identifier

NV14054

Folder Set

NV14

Title

[NV14054], Technical Note, Charles Batchelor, March 6th, 1878

Microfilm ID

4:195

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University