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Expired European patentEurope

Dental handpiece comprising a device for a detachable connection between two parts of the handpiece

EP 0029862 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed November 29, 1979 and granted March 14, 1984. A European patent lasts at most 20 years from filing, so its term ended November 29, 1999.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by May 29, 2005.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledNovember 29, 1979
PublishedJune 10, 1981
GrantedMarch 14, 1984
Term endedNovember 29, 1999
Application numberEP 79104767
Classification (CPC)A61C1/08 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedNov 29, 1979PublishedJune 10, 1981Patent grantedMarch 14, 1984Term endedNov 29, 1999

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.