Patents by Inventor Rudolph W. Johanns

Rudolph W. Johanns 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).

  • Animal breeding chart
    Patent number: 4055009
    Abstract: A breeding chart for dairy cows includes a housing, a calendar with three columns movably supported in the housing, a main indicator line marked on the housing and extends across the three columns, and a magnet representing a particular cow carried by the calendar in the first column at two day increments to the main indicator line, for indicating the initiation of a breeding cycle. The magnet is carried by the calendar in the second column at two day increments to the main indicator line for indicating checking time for breeding conception of the breeding cycle. The magnet is carried by the calendar in the third column at two day increments to the main indicator line for indicating checking time for starting a drying portion of a breeding cycle.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: October 25, 1977
    Inventor: Rudolph W. Johanns