4. Amusement devices: toys
  5. Aerodynamically supported or retarded
  6. Including rotary wing

Matthew Keennon

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Method of and apparatus for measuring the movement of a lens wit

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Toy aircraft with vertical flight dynamics

Amusement devices: toys – Aerodynamically supported or retarded – Including rotary wing
Patent

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Profile ID: LFUS-PAI-P-1412190

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