Device for early teaching of mathematics

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9454916
APP PUB NO 20140329209A1
SERIAL NO

13888360

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Abstract

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A device for visual and tactile learning in mathematics. A set is comprised of twenty-two individual clear, square counters; eleven male (11) and eleven female (12), each set numbered respectively zero through ten. Raised numbers, and dots provide a learning platform for number recognition and counting. Raised addition and equals symbols provide a platform for learning addition and subtraction. Addition can be achieved by drawing the two counters together in a locking process. Subtraction can be achieved by stacking and locking the female counter (12) over the male counter (11).

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Patent Owner(s)

Patent OwnerAddress
KELLY ANDREW DAVIDNot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kelly, Andrew David Bristow, US 2 3

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  • 2 Citation Count
  • G09B Class
  • 19.28 % this patent is cited more than
  • 9 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1123755722113101 - 1011 - 2021 - 3031 - 4041 - 5051 - 600255075100125150175200225250275300325350375400

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 27, 2028