Specifications and Drawings of Patents Relating to Electricity Issued by the U. S.
To all whom it may concern; Be it known that I, George G. Fryer, of the city and county of Philadelphia, and State of Pennsylvania, have invented an ... whereby exceedingly deep Artesian wells may be bored without the necessity of employing long cumbersome drill rods or shafts, which are most ... 2 is a diagram illus- 50 trating the arrangement of the electric circuits. ... In this case independent conduct- ing-wires K Ka#39; would be used to supply electric energy United States - Patent Office.
| Title | : | Specifications and Drawings of Patents Relating to Electricity Issued by the U. S. |
| Author | : | United States. Patent Office |
| Publisher | : | - 1893 |
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