4. Music
  5. Instruments
  6. Stringed

Douglas S. Hein

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Combined skin testing and vaccination needle

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Hand manipulated tool or instrument
Patent

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Pitch changing device for guitar

Music – Instruments – Stringed
Patent

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Skin testing device

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Hand manipulated tool or instrument
Design Patent

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Skin testing-device system

Special receptacle or package – Combined or convertible – Packaged assemblage or kit
Reexamination Certificate

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Skin testing-device system

Surgery – Diagnostic testing – Sampling nonliquid body material
Reexamination Certificate

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Profile ID: LFUS-PAI-P-980400

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