Patents by Inventor Ross Richard Ramm

Ross Richard Ramm 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).

  • Control circuit for an alarm tone generator
    Patent number: 6603392
    Abstract: A driver circuit for an alarm tone transducer includes a signal generator for generating a first signal, a converter for converting the first signal into a second signal for the alarm tone transducer, a battery as a power supply for the circuit, and a circuit for raising the voltage to increase the voltage supply for the signal generator.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: August 5, 2003
    Assignee: Robert Bosch GmbH
    Inventor: Ross Richard Ramm