[PT5137B], Memorandum, William Abbott Hardy, April 22nd, 1925

Item

Author

Hardy, William Abbott

Mentions

Wright, W G
Luhr, Charles William
Edison, Thomas Alva

Date

1925-04-22

Decade

1920-1929

Type

Memorandum

Subject

Patent application
Disc phonograph

Identifier

PT5137B

Folder Set

PT5137

Title

[PT5137B], Memorandum, William Abbott Hardy, April 22nd, 1925

Microfilm ID

247:685

Rights

Thomas Edison National Historical Park

Publisher

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

Item sets

Mounting for Diaphragms of Sound Boxes (1925)