Drilling motor valve and method of using same
US-9540877-B2 · Jan 10, 2017 · US
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Lanning Curtis patents in 2017
Lanning Curtis was listed as an assignee on 1 patent publication in 2017.
| Metric | Value |
|---|---|
| Company | Lanning Curtis |
| Year | 2017 |
| Patents | 1 |
Patents
Representative publications for Lanning Curtis in 2017.
Top CPC classifications
Most common classification codes for Lanning Curtis in 2017.
| CPC | Patents |
|---|---|
| E21B21/103 | 1 |
| E21B34/06 | 1 |
| E21B4/02 | 1 |
| E21B4/06 | 1 |
| E21B4/14 | 1 |
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