Grassmann; Darin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Grassmann; Darin.The latest application filed is for "frac manifold isolation tool".
- Grassmann; Darin - Piedmont OK
| Patent | Date |
|---|---|
| Frac Manifold Isolation Tool App 20220307362 - Livingston; Jimmy ; et al. | 2022-09-29 |
| Flow Diverter App 20220259963 - Sizemore; Richard Brian ; et al. | 2022-08-18 |
| Extendable spool Grant 11,214,455 - McGuire , et al. January 4, 2 | 2022-01-04 |
| Universal atmospheric deployment device Grant 11,168,528 - McGuire , et al. November 9, 2 | 2021-11-09 |
| Universal Atmospheric Deployment Device App 20200277832 - McGuire; Bob ; et al. | 2020-09-03 |
| Extendable Spool App 20200148493 - McGuire; Bob ; et al. | 2020-05-14 |
| Extendable spool Grant 10,309,564 - McGuire , et al. | 2019-06-04 |
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