Inventor · disambiguated record

Helmut Langenberg

Also filed as: LANGENBERG HELMUT · MERTEN GERHARD

2 granted patents·10 citations·filing 1978–1981

55Inventor score

Technology areasE21C E21F

Files withGEWERK EISENHUETTE WESTFALIA2

Top patents by PatentIndex Score

2 records

0135US4241824AConveyors for use in mineral mining installationsGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Dec 30, 1980·6 cites·8 claims
0227US4391470AMethod of, and apparatus for, winning mineral materialGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Jul 5, 1983·4 cites·22 claims

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