Hammock
CA 2507775 C · Owner: Helsdon, David · Inventors: Helsdon, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hammock has a bed formed from a blank of flexible fabric. The blank is defined by opposed ends and opposed sides the ends and sides of the blank coinciding with opposed ends and opposed side edges of the hammock respectively. Each side of the blank tapers inwardly from the ends each end of the blank has a notch having opposed edges of equal length. The opposed edges of each notch taper inwardly from the end towards an apex. The opposed edges of each notch are attached by a seam to form the bed from the blank. Cross-braces proximal the ends of the hammock are connected to the side edges of the hammock at connection points opposed across the bed from one side edge to the opposite side edge. …
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 May 18, 2005 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 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.