 | Edward Trevert, Arthur Eugene Watson - 1909 - 806 стор.
...alarms, thermostats, annunciators, and the locating and remedying of faults, with 56 original diagrams. Electric Gas Lighting. How to install electric gas...selection of suitable batteries, wiring and repairs, by HS NORRII. 101 pages, 67 illustrations. Telephone Troubles, and How to Find Them, by HYDE. A most useful... | |
 | Franklin Institute (Philadelphia, Pa.) - 1907 - 656 стор.
...making and using of the various instruments for the detecting of Electric Currents. Fully illustrated. ELECTRIC GAS LIGHTING.— How to install Electric...jump spark and multiple systems for all purposes. HS Norrie. lor pages. S7 illustrations, paper. THE MAGNETO TELEPHONE.— Its construction, fitting... | |
 | Franklin Institute (Philadelphia, Pa.) - 1907 - 628 стор.
...making and using of the various instruments for the detecting of Electric Currents. Fully illustrated. ELECTRIC GAS LIGHTING.— How to install Electric...jump spark and multiple systems for all purposes. HS Norrie. 101 pages, 57 illustrations, paper. THE MAGNETO TELEPHONE. — Its construction, fitting... | |
 | Edward Trevert, Arthur Eugene Watson - 1911 - 600 стор.
...alarms, thermostats, annunciators, and the locating and remedying of faults, with 56 original diagrams. Electric Gas Lighting. How to install electric gas igniting apparatus including the lump spark and multiple systems for all purposes. Also the care and selection of suitable batteries,... | |
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El-ECTRIC GAS LIGHTING HOW TO INSTALL ELECTRIC GAS IGNITING APPARATUS INCLUDING THE JUMP SPARK AND MULTIPLE SYSTEMS FOR USE IN HOUSES, CHURCHES, THEATRES, HALLS, SCHOOLS, STORES, OR ANY LARGE BUILDING. Also the care and selection of suitable Batteries,... 
