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Patent applications and USPTO patent grants for Cutler; Burton.The latest application filed is for "electronic testing device for use with educational books".
Patent | Date |
---|---|
Electronic testing device for use with educational books Grant 5,407,357 - Cutler April 18, 1 | 1995-04-18 |
Electronic teaching apparatus Grant 5,122,062 - Cutler , et al. June 16, 1 | 1992-06-16 |
Ruler Grant D318,435 - Cutler July 23, 1 | 1991-07-23 |
Teaching clock Grant D306,611 - Hills , et al. March 13, 1 | 1990-03-13 |
Electric self-teaching apparatus utilizing printed and auditory means Grant 4,664,634 - Cutler , et al. May 12, 1 | 1987-05-12 |
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