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Method of producing a vacuum
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Patent number 4,973,227
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Issue date Nov 27, 1990
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HWT Gesellschaft fur Hydrid-und Wasserstofftechnik m.b.H.
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Otto Bernauer
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Pressure vessel for hydrogen storage
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Patent number 4,964,524
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Issue date Oct 23, 1990
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Gesellschaft fuer Hybrid und Wasserstofftechnik mbH
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Clemens Halene
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Hydrogen storage
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Patent number 4,667,815
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Issue date May 26, 1987
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Mannesmann Aktiengesellschaft
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Clemens Halene
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Making a seamless spherical case
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Patent number 4,418,557
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Issue date Dec 6, 1983
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Mannesmann Aktiengesellschaft
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Clemens Halene
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Making contoured hollows
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Patent number 4,317,348
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Issue date Mar 2, 1982
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Mannesmann Aktiengesellschaft
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Clemens Halene
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Making a seamless, spherical case
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Patent number 4,312,206
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Issue date Jan 26, 1982
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Mannesmann Aktiengesellschaft
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Clemens Halene
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...