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Robert A. Barr

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  • Virginia Beach, VA, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    NO SOLID BED EXTRUDER SCREW
    • Publication number 20210252764
    • Publication date Aug 19, 2021
    • Robert A. Barr
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    HELMET FOR PLAYING SPORTS
    • Publication number 20190082769
    • Publication date Mar 21, 2019
    • Robert A. Barr
    • A42 - HEADWEAR
  • Information Patent Application

    INDEPENDENTLY DRIVEN DEVICE FOR USE WITH PLASTIC MELT FEED SCREW
    • Publication number 20180079126
    • Publication date Mar 22, 2018
    • Robert A. Barr
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    REDUCED WEAR EXTRUDER SCREW
    • Publication number 20150273753
    • Publication date Oct 1, 2015
    • Barr, Inc
    • Robert A. Barr
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    SOFT SAFE HELMET
    • Publication number 20140020157
    • Publication date Jan 23, 2014
    • Robert A. Barr
    • A42 - HEADWEAR
  • Information Patent Application

    Extruder screw with improved energy efficient melting
    • Publication number 20020163853
    • Publication date Nov 7, 2002
    • Robert A. Barr
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL