Carton with pour spout
CA 1263353 C · Owner: Ralston Purina Company · Inventors: Weber, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carton formed from a unitary blank of paperboard includes a front panel, a rear panel and side panels joined to the front and rear panels along fold lines. Top and bottom closure flaps are joined to the front and rear panels. A pour spout is defined by one of the panels. The pour spout includes a generally triangular flap joined to the panel along an angled fold line. The triangular flap or area includes a lateral edge to which a closure tab or glue flap is joined. A dust flap is joined to a top edge of the triangular flap along a fold line. The dust flap defines a curved edge and a notch. The notch is positioned to engage a top edge of one of the panels to hold the spout in an open …
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
- Granted November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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.