Patent Yard Sign in
European application, no grantEurope

Draining ditch headwall unit

EP 0000788 A1 · Applicant: H.H. Robertson Company

EPO PDF

Overview

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

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, and the Claude kit works from them.

Google PatentsEPO PDF

Why it's free to use

  • Filed August 10, 1978 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 10, 1998.
  • 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 February 10, 2004.
  • 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.
FiledAugust 10, 1978
PublishedFebruary 21, 1979
GrantedNever granted
Term endedAugust 10, 1998
Application numberEP 78100645
Classification (CPC)E01F5/005 +1 more

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedAug 10, 1978PublishedFeb 21, 1979Term endedAug 10, 1998

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.