4. Tent, canopy, umbrella, or cane
  5. Umbrella
  6. Self-opening and closing

Heinz Bohlen

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Coaxial inductive output tube having an annular output cavity

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
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Hollow beam electron tube having TM.sub.0x0 resonators, where X

Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
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Microwave amplifier tube having two ring resonators

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent

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Profile ID: LFUS-PAI-P-382791

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