| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| google books patent rolls | 1.32 | 0.5 | 7909 | 28 | 25 |
| 0.39 | 0.1 | 5199 | 92 | 6 | |
| books | 1.3 | 0.8 | 5519 | 43 | 5 |
| patent | 1.94 | 0.9 | 2781 | 19 | 6 |
| rolls | 0.79 | 0.6 | 8660 | 2 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| google books patent rolls | 1.82 | 0.2 | 2516 | 83 |
