Expired design patentArchive
Vaporizing pipe in gas chromatography
US D487,307 S · Assignee: Saika Technological Institute Foundation · Inventors: Sasano; Ryoichi et al.
Overview
The published document from the USPTO: abstract, claims, description. Open it full size
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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 March 2, 2004. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended March 2, 2018.
- A design patent protects only how a product looks. We check US rights only.
FiledFebruary 5, 2003
GrantedMarch 2, 2004
Term endedMarch 2, 2018
Application numberD/175377
Classification (CPC)—
Length4 pages
Timeline
Timeline From USPTO dates
Sources & verification
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