Consequently it follows that a factory appliance repair and inspection force is a necessary adjunct to any industrial appliance division. ... The cost of developing prospects up to the time of purchase, the cost of maintaining a gas engine repair force, the cost of a gas engine running in ... In 1911 there were sold 221 engines representing 1, 722 11. p., with an average of 18, 100 cu. ft. of gas per h. p. per year.
|Title||:||The Gas Record|