G09B 1/38

Technology

Patent/Pub #	Title	Filing Date	Issue/Publication Date	Patent Owner
9795893	Macroscopic psuedo magnetic monopoles and fabrication techniques	Feb 24, 16	Oct 24, 17	HARRINGTON ELECTRONICS LLC
9747810	Magnetic display including quick-release mechanism	Feb 03, 12	Aug 29, 17	REQUISITE SOLUTIONS INCORPORATED
8708703	Method and apparatus for teaching mathematics	Aug 15, 05	Apr 29, 14	Not available
6354840	Basic educational system	Feb 29, 00	Mar 12, 02	Not available
4422642	Novelty educational puzzle apparatus	Sep 30, 82	Dec 27, 83	Not available

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Number of patents in all portfolios	100 (maximum)	1000 (maximum)	2000 (maximum)	Unlimited
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Maximum number of portfolios	5 (maximum)	10 (maximum)	100 (maximum)	Unlimited
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Number of patents in all portfolios	100 (maximum)	1000 (maximum)	2000 (maximum)	Unlimited
Watches in all categories (Watch)	10 (maximum)	50 (maximum)	500 (maximum)	Unlimited
Maximum number of portfolios	5 (maximum)	10 (maximum)	100 (maximum)	Unlimited
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Number of patents in all portfolios	100 (maximum)	1000 (maximum)	2000 (maximum)	Unlimited
Follows in all categories (Watch)	10 (maximum)	50 (maximum)	500 (maximum)	Unlimited
Maximum number of portfolios	5 (maximum)	10 (maximum)	100 (maximum)	Unlimited
Maximum number of comparisons	1 (maximum)	5 (maximum)	20 (maximum)	Unlimited