Alwin Sigel-Gfeller

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8418 Schlatt, CH

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Patents Grantslast 30 patents

Information Patent Grant
Conveyor apparatus for the interior of pipelines
- Patent number 4,112,850
- Issue date Sep 12, 1978
- Alwin Sigel-Gfeller
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...