4. Education and demonstration
  5. Telling time or calendar reading

Janice L. Rogers

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Apparatus and method to aid in the teaching of the concept of ti

Education and demonstration – Telling time or calendar reading
Patent

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Elapsed time device

Horology: time measuring systems or devices – Displays or display device details – Optical
Reexamination Certificate

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Elapsed time teaching aid

Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor
Patent

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Profile ID: LFUS-PAI-P-507009

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