Device for filling ditches
CA 2105695 A1 · Owner: Bilfinger + Berger · Inventors: Luddecke, Kurt; Siefermann, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A b s t r a c t, The invention concerns a device for filling ditches comprising at, least: A vehicle with a driver's cab or a trailer with a detachable tractor for transporting a container for the fill material as well as a, discharger to which the fill material is fed via a feed unit located in the container, whereby the discharge is mounted in the area of the vehicle or trailer between the driver's cab and container or tractor, and container, and aligned essentially diagonally to the vehicle axle so that the fill material is discharged on a side of the vehicle or trailer which is within the field of vision of a person in the driver's cab or tractor. Figure 4
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.