Patents by Inventor Steffen Seiler

Steffen Seiler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic keyboard instrument
    Patent number: 5986202
    Abstract: A silent electronic keyboard instrument for operation in conjunction with a synthesizer for transmitting sound only electronically to a headphone terminal, and exhibiting keyboard operation substantially duplicative of acoustic piano keyboard operation.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: November 16, 1999
    Assignee: Ed. Seiler Pianofortefabrik GmbH & Co. KG
    Inventor: Steffen Seiler, deceased
  • Piano
    Patent number: D308068
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: May 22, 1990
    Assignee: Ed. Seiler Pianofortefabrik GmbH & Co KG
    Inventor: Steffen Seiler