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Priority claimed from NO294572Aexternal-prioritypatent/NO133336C/no
Application filed by Erlau Ag Eisen DrahtwerkfiledCriticalErlau Ag Eisen Drahtwerk
Priority to NO742966ApriorityCriticalpatent/NO133416C/no
Publication of NO133416BpublicationCriticalpatent/NO133416B/no
Publication of NO133416CpublicationCriticalpatent/NO133416C/no
Procede pour determiner le couple de vissage d'un joint tubulaire comportant un filetage conique et une butee de limitation de vissage, utilisable dans l'industrie du petrole et dispositifs pour mettre en oeuvre ce procede