Expired European patentEurope
Signal device for emergency approach of aircraft stationed on ships
EP 0455980 B1 · Applicant: PIEPENBROCK PYROTECHNIK GMBH
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Read the whole patent
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.
Why it's free to use
- Filed March 28, 1991 and granted March 9, 1994. A European patent lasts at most 20 years from filing, so its term ended March 28, 2011.
- 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 September 28, 2016.
- 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.
FiledMarch 28, 1991
PublishedNovember 13, 1991
GrantedMarch 9, 1994
Term endedMarch 28, 2011
Application numberEP 91104937
Classification (CPC)C06C15/00 +2 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.