4. Fluid handling
  5. Back flow prevention by vacuum breaking
  6. Air vent in liquid flow line

Robert B. Stevens

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Cartridge timepiece

Horology: time measuring systems or devices – Cases – Wrist worn
Patent

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Detachable button

Buckles – buttons – clasps – etc. – Readily interlocking – two-part fastener requiring either...
Patent

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External ear cleaning device

Surgery – Swab including handle with absorbent material at end thereof – Body treating material fed to absorbent material
Patent

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Germicidal toilet seat

Baths – closets – sinks – and spittoons – Disinfection – Seat and cover treating
Patent

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Ladder retaining assembly

Fire escape – ladder – or scaffold – Ladder with land vehicle
Reexamination Certificate

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Profile ID: LFUS-PAI-P-173135

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