Assignee
ESSER WERKE GMBH
DE·3 granted patents·41 citations·filing 1975–1998
Top patents by PatentIndex Score
3 records- 0155US5984374APipe bendESSER WERKE GMBH·Filed 1998·Granted Nov 16, 1999·21 cites·3 claims
- 0247US4497673AMethod of manufacturing double-walled tubeESSER WERKE GMBH·Filed 1982·Granted Feb 5, 1985·14 cites·5 claims
- 0335US4030711AMethod and apparatus for the surface hardening of the inner surface of tube bendsESSER WERKE GMBH·Filed 1975·Granted Jun 21, 1977·6 cites·12 claims
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