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Water heater combustion chamber sensing system

Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate

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Water heater construction

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent

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Water heater construction

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent

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Water heater construction

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent

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Water heater construction

Liquid heaters and vaporizers – Casings
Patent

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Water heater construction

Liquid heaters and vaporizers – Stand boiler – And casing feature for stand boiler or external water tank...
Reexamination Certificate

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Water heater construction

Liquid heaters and vaporizers – Casings
Patent

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Water heater construction and fabrication method therefor

Liquid heaters and vaporizers – Casings
Patent

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Water heater construction and method of heating water

Liquid heaters and vaporizers – Flue – Vertical
Patent

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Water heater construction with sediment removal means

Liquid heaters and vaporizers – Flue – Vertical
Patent

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Water heater flue system

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Reexamination Certificate

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Water heater flue system

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Reexamination Certificate

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Water heater flue with improved heat transfer

Liquid heaters and vaporizers – Flue – Vertical
Reexamination Certificate

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Water heater foam dam and component cover and method for...

Liquid heaters and vaporizers – Stand boiler – And casing feature for stand boiler or external water tank...
Reexamination Certificate

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Water heater foam dam and forming method

Liquid heaters and vaporizers – Casings
Patent

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Water heater having a low NOx burner integrated with FVIR...

Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate

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Water heater having filling dip tube

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent

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Water heater having flue damper with airflow apparatus

Liquid heaters and vaporizers – Stand boiler
Reexamination Certificate

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Water heater having flue damper with airflow apparatus

Liquid heaters and vaporizers – Fire tube – With baffle in flue
Reexamination Certificate

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Water heater having raw fuel jet pilot and associated burner...

Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate

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