4. Check-actuated control mechanisms
  5. With specific cabinet structure

Hsin-Te Chen

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Apparatus for preventing a coin drop mechanism and a coin box fr

Check-actuated control mechanisms – With specific cabinet structure
Patent

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Fixed-focus lens

Optical: systems and elements – Lens – With field curvature shaping
Reexamination Certificate

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Fixed-focus lens

Optical: systems and elements – Lens – Multiple component lenses
Reexamination Certificate

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Fixed-focus lens

Optical: systems and elements – Lens – Reverse telephoto
Reexamination Certificate

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