Gravel pack and sand disposal device
US-9447661-B2 · Sep 20, 2016 · US
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Ritchey Brian J patents in 2016
Ritchey Brian J was listed as an assignee on 1 patent publication in 2016.
| Metric | Value |
|---|---|
| Company | Ritchey Brian J |
| Year | 2016 |
| Patents | 1 |
Patents
Representative publications for Ritchey Brian J in 2016.
Top CPC classifications
Most common classification codes for Ritchey Brian J in 2016.
| CPC | Patents |
|---|---|
| E21B2034/007 | 1 |
| E21B2200/06 | 1 |
| E21B33/124 | 1 |
| E21B34/14 | 1 |
| E21B43/04 | 1 |
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