4. Closure fasteners
  5. Seal bolts

David L. Stevenson

Inventor

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Air spring load monitoring system

Weighing scales – Structural installation – Vehicle
Patent

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Bolt seal lock device

Closure fasteners – Bolts – Swinging
Patent

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Coolant injector

Internal-combustion engines – Water and hydrocarbon
Patent

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Data display unit

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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Electronic security seal

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Profile ID: LFUS-PAI-P-108436

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