4. Baths, closets, sinks, and spittoons
  5. Flush closet
  6. Bowl

Airvac, Inc.

Corporate Assignee

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Dual backflow check valve

Fluid handling – Processes – Involving pressure control
Reexamination Certificate

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Sump-vented controller mechanism for vacuum sewerage transport s

Fluid handling – Diverse fluid containing pressure systems – Main line flow displaces additive from shunt reservoir
Patent

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Vacuum toilet system

Baths – closets – sinks – and spittoons – Flush closet – Bowl
Patent

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