Patents by Inventor Daniel P. Oerth

Daniel P. Oerth 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).

  • Biorhythmic slide rule
    Patent number: 4230936
    Abstract: A biorhythmic slide rule which includes three separate movable slides wherein each slide includes different biorhythmic indicia. The slides are positionable in an overlying relationship with the indicia of all three of the slides being observable permitting a coordinated assemblage of the indica.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: October 28, 1980
    Inventor: Daniel P. Oerth