4. Measuring and testing
  5. Liquid level or depth gauge
  6. Hydrostatic pressure type

Henry Gifford

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Condom and package

Surgery – Male reproductory tract shields or birth control devices
Patent

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Dial tone annunciating system and method

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Patent

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Ergonomic keyboard

Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Reexamination Certificate

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Fuel oil monitor system and method

Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent

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No-hands baby stroller

Land vehicles – Wheeled – Stable vehicles – handle-propelled
Patent

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Profile ID: LFUS-PAI-P-40997

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