Patents by Inventor Dana Larson

Dana Larson 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).

  • Telephone headset in-use indicator
    Patent number: 5608794
    Abstract: An indicator lamp identifies the status of telephone calls both transmitted and received from a hands-free telephone headset. The indicator lamp is either automatically activated by a signal from a telephone line or manually activated by a switch. Manual activation provides an additional means for the operator to prevent interruptions regardless of telephone status. The indicator lamp is located at various locations on the headset next to the mouthpiece or, alternatively, along the entire length of the headset arm.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: March 4, 1997
    Inventor: Dana Larson