Ruttan, Henry, 1792-1871. Ventilation and warming of buildings : upon the principles as designed and patented / by Henry Ruttan ; improved and patented by B. R. Hawley and Isaac D. Smead ...

Ruttan, Henry, 1792-1871.

Ventilation and warming of buildings : upon the principles as designed and patented / by Henry Ruttan ; improved and patented by B. R. Hawley and Isaac D. Smead ...

Toledo, Ohio : Isaac D. Smead & Co., c1885 (Chicago : Shepard & Johnston, printers)

Includes testimonials.

Heating.

Ventilation.

Furnaces.

School buildings -- Heating and ventilation.

Hawley, B. R.

Smead, Isaac D. (Isaac David), b. 1849.

Northcott & Stine (Firm)

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