4. Education and demonstration
  5. Communication aids for the handicapped
  6. Tactile reading aid

Arthur G. Crimmins, Jr.

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Cyclorotor composite aircraft

Aeronautics and astronautics – Aircraft – lighter-than-air – Airship and helicopter sustained
Patent

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Finger control system

Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Patent

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Means for securing and aligning the barrels of two pistols subst

Firearms – Miscellaneous
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Profile ID: LFUS-PAI-P-977391

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