4. Electric lamp and discharge devices
  5. With luminescent solid or liquid material
  6. With gaseous discharge medium

Gordon D. Coplein

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Fluorescent lamp with envelope grooves

Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent

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Guides for centering screws and drill bits in countersink holes

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support
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Ultrasonic instrument with coupler for work tip

Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Reexamination Certificate

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Profile ID: LFUS-PAI-P-348976

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