[NM020AAL], Technical Note, Thomas Alva Edison, October 22nd, 1885

Item

Abstract

"Dick-- In view of that patent [drawing] assigned to WU change the diagram thus [drawing] pen in center diaphragm & little weight"; drawing and description of 3 key features for "New patent on phonoplex" note on back to "look up Gray's patent on condenser around relay" also refers to Case 132

Date

1885-10-22

Decade

1880-1889

Identifier

NM020AAL

Folder Set

NM020

Title

[NM020AAL], Technical Note, Thomas Alva Edison, October 22nd, 1885

Microfilm ID

44:695

Publisher

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