4. Communications, electrical: acoustic wave systems and devices
  5. Transmitter systems
  6. Animal control

Lester B. Hall

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Breathing apparatus

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent

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Breathing mask

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent

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Combined breathing mask and container therefore

Equipment for safety – protection – and rescue – Fire extinguisher or casing therefor – Portable or hand held
Patent

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Pest control apparatus

Communications – electrical: acoustic wave systems and devices – Transmitter systems – Animal control
Patent

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Pest control apparatus

Communications – electrical: acoustic wave systems and devices – Transmitter systems – Animal control
Patent

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Profile ID: LFUS-PAI-P-520930

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