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Patent applications and USPTO patent grants for BLUMAUER; Johannes.The latest application filed is for "use of intermediate piece for connecting molded articles of manganese steel with carbon steel, and method for connecting austenitic manganese steel casting pieces with standard rails".
Patent | Date |
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Use Of Intermediate Piece For Connecting Molded Articles Of Manganese Steel With Carbon Steel, And Method For Connecting Austenitic Manganese Steel Casting Pieces With Standard Rails App 20120241053 - BLUMAUER; Johannes | 2012-09-27 |
Intermediate Piece For Connecting Molded Articles Of Manganese Steel With Carbon Steel And Method For Connecting Austenitic Manganese Steel Casting Pieces With Standard Rails App 20100224288 - Blumauer; Johannes | 2010-09-09 |
Method for connection of railway point components consisting of cast hard manganese steel or manganese steel rails to a rail made from carbon steel Grant 5,170,932 - Blumauer December 15, 1 | 1992-12-15 |
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