Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
telephone invention by elisha gray | 1.12 | 0.4 | 411 | 16 |
elisha gray telephone patent | 1.79 | 0.3 | 3185 | 7 |
what did elisha gray invent | 1.86 | 0.5 | 2464 | 31 |
telephone invention bell and gray | 1.87 | 0.6 | 3642 | 92 |
alexander graham telephone invention | 1.67 | 0.5 | 7446 | 75 |