4. Books, strips, and leaves
  5. Book, element thereof, or accessory therefor
  6. Protectors

Ralph D. Thomas

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Multi-cell battery protection system

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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Snap on device for hardcover ring binder

Binder device releasably engaging aperture or notch of sheet – Miscellaneous – Sheet lifters
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Snap on device for hardcover ring binder

Books – strips – and leaves – Book – element thereof – or accessory therefor – Protectors
Patent

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Profile ID: LFUS-PAI-P-781252

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