Patents Represented by Attorney Donavan Lee Favre

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  • Water treatment with large numbers of non-pathogenic bacteria to improve yield of aquatic animals
    Patent number: 5746155
    Abstract: The addition of a sufficient quantity of organisms of bacteria selected from the group comprising Bacillus lentimorbus, Bacillus stearothermophilus and Bacillus cereus and mixtures thereof to a fish pond increases the production of fish in the pond by over 25%.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: May 5, 1998
    Inventors: Walter T. Logan, Stephen L. Bartlett
  • Self-restoring railroad highway crossing gate device
    Patent number: 5469660
    Abstract: This is a device which will be part of a railroad highway crossing gate system to prevent gate-arms from being knocked out of their support members by contact with vehicles either by accident or on purpose. The device will allow the gate-arm to be pushed out of position with the traffic flow and return to its normal position when released by the vehicle in contact.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: November 28, 1995
    Inventor: Harry L. Tamenne