4. Horology: time measuring systems or devices
  5. Chronological
  6. With mechanical or electromechanical driven display

Eugene N. Ketner

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Pressure compensating flow control device

Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent

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Timepiece having central opening

Horology: time measuring systems or devices – Chronological – With mechanical or electromechanical driven display
Patent

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Toroidal time piece

Horology: time measuring systems or devices – Cases – Wrist worn
Patent

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Toroidal wrist watch

Measuring – testing – or signalling instruments – Watch – wristwatch or case – Wrist type
Patent

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Profile ID: LFUS-PAI-P-782136

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