. Official proceedings . DESIGNING ENGINEERS AND MANUFACTURERS Of ELESCO STEAM SUPERHEATERS FOR tOCOMOTIVCMARINE ANO STATIONARY BOILERS FEED WATER HEATERS . EXHAUSTSTEAM INJECTORS AND PYROMETERSFOR LOCOMOTIVES hE;S.^s,r~* THE SUPERHEATER COMPANY *s£Bi,B*« ■wa ^O FFIC1AU PROCEEDINGS j£?\A lMHSs *P?PerYear >|f|^ 25* FcrCopy^ Vol. XXVII. MARCH 22, 1928. No. 5. SOME BY-PRODUCTS OF RADIO By PHILLIPPS THOMAS, , Research Engineer, WestinghouseElectric & Manufacturing Company, East Pittsburgh, Pa. Steel Car Forge Company PITTSBURGH, PENNSYLVANIA FORGINGS. Dieter Lock and Holding Nuts STANDARD

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. Official proceedings . DESIGNING ENGINEERS AND MANUFACTURERS Of ELESCO STEAM SUPERHEATERS FOR tOCOMOTIVCMARINE ANO STATIONARY BOILERS FEED WATER HEATERS . EXHAUSTSTEAM INJECTORS AND PYROMETERSFOR LOCOMOTIVES hE;S.^s,r~* THE SUPERHEATER COMPANY *s£Bi,B*« ■wa ^O FFIC1AU PROCEEDINGS j£?\A lMHSs *P?PerYear >|f|^ 25* FcrCopy^ Vol. XXVII. MARCH 22, 1928. No. 5. SOME BY-PRODUCTS OF RADIO By PHILLIPPS THOMAS, , Research Engineer, WestinghouseElectric & Manufacturing Company, East Pittsburgh, Pa. Steel Car Forge Company PITTSBURGH, PENNSYLVANIA FORGINGS. Dieter Lock and Holding Nuts STANDARD SAFETY NUTCORPORATION 30 CHURCH ST. NEW YORK LEWIS IRON, The Iron Superior Penn Iron & Steel Company, Creighton, Pa. SOLE SALES AGENTS,Joseph T. Ryerson & Son, Inc., Chicago, 111. ALWAYS AT YOUR SERVICE— P. T. L. Inspectors—located in the large industrial centers, inspectand test every step during manufacture and guarantee excellenceof 20 and 21 Tell How It Is Done—Write For Your Copy. PITTSBURGH TESTING LABORATORY Inspection Engineers and ChemistsPITTSBURGH, PA.

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Keywords: ., bookauthorrailwayc, bookcentury1900, bookdecade1900, bookyear1901