[D7941W], Report from C E Spagnolettis, April 17th, 1879

Item

Abstract

Report on telephone pat 2909(1877) finds it original. Enumerates points for "special consideration:" eg., relation to Hughes micro; Reiss [TAE marg: "Reiss didnt use membrane. This is evident error"]; mica diaphgram call device ["done away with"]. Marg: "This is report only on 1st patent not on 2396."

Date

1879-04-17

Decade

1870-1879

Type

Identifier

D7941W

Folder Set

D7941

Title

[D7941W], Report from C E Spagnolettis, April 17th, 1879

Microfilm ID

52:525

Publisher

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