Combined waterstop and fiberboard holders for stay-in-place continuous forms for concrete wall frabrication

Read the whole patent

Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

• Granted June 21, 1988. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended June 21, 2002.
• A design patent protects only how a product looks. We check US rights only.