Multi-well bop cellar trailer
US-2021025263-A1 · Jan 28, 2021 · US
This page is not indexed by search engines while we improve data quality.
Chalus David Frederick patents
Chalus David Frederick is listed as an inventor on 3 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Chalus David Frederick |
| Total patents | 3 |
| First publication | Sep 7, 2017 |
| Latest publication | Jan 28, 2021 |
Notable patents
Publications ranked by popularity score, then publication date.
Multi-well bop cellar trailer
US-10822924-B2 · Nov 3, 2020 · US
Multi-well bop cellar trailer
US-2017254181-A1 · Sep 7, 2017 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Nat Oilwell Varco Lp | 3 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E04B1/34336 | 3 |
| E21B41/00 | 3 |
| E21B33/06 | 3 |
| E21B7/02 | 3 |
| E21B15/00 | 3 |