4. Education and demonstration
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Karen Ann Richard

Examiner

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Apparatus and didactic method for teaching and showing primary o

Education and demonstration – Science – Astronomy
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Bending device

Surgery – Truss – Perineal
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Die having magic squares

Education and demonstration – Mathematics – Arithmetic
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Educational puzzle

Education and demonstration – Question or problem eliciting response – Correctness of response indicated to examine by...
Patent

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Educational toy

Education and demonstration – Science – Physics
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Profile ID: LFUS-PAI-P-263223

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