Patents by Inventor Willi Meixner

Willi Meixner 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).

  • Camera with battery testing device
    Patent number: 4072960
    Abstract: A camera incorporating a light-meter and a battery-powered lamp for indicng when the level of incident light is so low as to be unsuitable for photography also includes means for determining the state of charge of the battery. The possibility of making an erroneous determination of the state of charge of the battery as the result of failing to cover the photosensitive element during the determination of the state of charge is eliminated.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: February 7, 1978
    Assignee: Balda-Werke Photographische Gerate und Kunststoff GmbH & Co. KG.
    Inventor: Willi Meixner