Wide necked drum
CA 2041383 A1 · Owner: Przytulla, Dietmar · Inventors: Przytulla, Dietmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mauser-Werke GmbH (G 959) P 2/91, ABSTRACT The invention relates to a bulk wide-necked drum especially to an opentop drum, made from thermoplastic synthetic material for the transport, of particularly dangerous liquid or solid charges. For a freight space and cost saving shipment of empty drums it is realized according to the invention, that the drum body is of a lesser diameter in the base portion than in the portion of the top charging opening and a plurality of conical open top drums are spacesaving stackable one into another. (Figure 1)
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 April 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2013.
- 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.