One of Thomas Edison's most influential Inventions, the phonograph, introduced the world to a revolutionary new concept, the ability to record sounds and play them back at a later time.  Click on the links below to view some patents of note regarding the development of this device.


Invention                                                                                           Filing Date                          Patent (PDF)


Improvement in Phonograph or Speaking Machines                    12/24/1887                                Download

(No. 200,521 to T. Edison)​

Coin-Actuated Attachment for Phonographs                                  12/18/1889                                Download

(No. 428,750 to L. Glass et al.)​


Combined Cash Register and Phonograph                                      09/20/1890                                Download

(No. 460,492 to A. Hayden)


Method of and Means for Duplicating or                                         03/17/1892                                Download

Transferring Phonographic Records

(No. 475,490 to L. Douglass)


Tablet for Recording Sound-Vibrations                                             06/29/1891                                Download

(No. 505,910 to J. Wassenich)


Gramophone and Actuating Device Therefor                                  08/19/1897                                Download

(No. 601,198 to E. Johnson)


Process of Coating Phonographic-Records                                      06/16/1900                                Download

(No. 713,863 to T. Edison)


Gramophone-Record                                                                           12/26/1911                                Download

(No. 1,046,650 to L. Rotheudt)