Expired European patentEurope
Linear shaped charges
EP 0052521 B1 · Applicant: QED DESIGN AND DEVELOPEMENT LIMITED
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 November 18, 1981 and granted August 14, 1985. A European patent lasts at most 20 years from filing, so its term ended November 18, 2001.
- 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 18, 2007.
- 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 18, 1981
PublishedMay 26, 1982
GrantedAugust 14, 1985
Term endedNovember 18, 2001
Application numberEP 81305445
Classification (CPC)F42B1/02 +1 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.