Roman blind assembly
CA 2510993 C · Owner: Willis, Norman · Inventors: Zhang, Xiulian; Willis, Norman; Ng, Philip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a method of attaching a ring member to a cord using a minimum of steps. The method includes the steps of providing a hobble cord having opposite first and second ends and a plurality of loopy. The loops of the cord are preferably preformed onto the cord and are integral thereto. Each loop formed on the cord has a loop opening dimensioned to receive one end of the cord. The first end of the cord is first threaded through the ring and the ring is then positioned to sit adjacent one of the loops between the loop and the first end of the hobble cord. The first end of the hobble cord is then threaded through the opening of the loop. The ring is then firmly secured to the …
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 June 28, 2005 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.