4. Education and demonstration
  5. Physical education
  6. Swimming

David E. Ryland

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Apparatus and method for developing a proper swimming whip...

Exercise devices – Involving user translation or physical simulation thereof – Swimming
Reexamination Certificate

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Systems and methods for developing correct mechanics of a...

Education and demonstration – Physical education – Swimming
Reexamination Certificate

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Systems and methods for developing correct mechanics of a...

Education and demonstration – Physical education – Swimming
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2366099

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