Folding chair support frame

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11737564
APP PUB NO 20230200539A1
SERIAL NO

18082743

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A folding chair support frame is provided, including an upper support frame detachably connected to a chair surface, and a lower support frame connected to the upper support frame. The upper support frame includes an upper connection component, and upper connection rods rotatably connected to the upper connection component. The lower support frame includes a lower connection component, and lower connection rods rotatably connected to the lower connection component at a limited angle. The lower connection component is coaxially and rotatably connected to the upper connection component. Free ends of the upper connecting rods and free ends of the lower connecting rods are located on a same side of the lower connection component when the folding chair support frame is in a folded state.

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First Claim

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Sheng Ningbo, CN 94 465

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Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Feb 28, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 28, 2031
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Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00