[Prospectus of Bell and Ivison's patent for the saving of fuel, the saving of fuel, the prevention of smoke, and the safety of steam boilers]
Bell, William,Engineer.
Office for Conjoined Patents (Edinburgh)
[Edinburgh? : s.n.,
1838?]
Office for Conjoined Patents (Ivison's and Bell's) for the saving of fuel, the prevention of smoke, and the safety of steam boilers, 9 Queen Street, Edinburgh, 27th August 1838.--at head of page 1.
Signed:  William Bell, Director.
Steam-boilers
Scotland Edinburgh.