Springer; Johann
Patent Applications and Registrations
Patent applications and USPTO patent grants for Springer; Johann.The latest application filed is for "drill string member".
- Springer; Johann - Linz A-4030 AT
- Springer; Johann - Hanover DE
- Springer; Johann - Aichwald DE
| Patent | Date |
|---|---|
| Drill string member Grant 7,040,422 - Springer May 9, 2 | 2006-05-09 |
| Drill string member App 20040003945 - Springer, Johann | 2004-01-08 |
| Double walled insulated tubing and method of installing same Grant 5,862,866 - Springer January 26, 1 | 1999-01-26 |
| Method of manufacturing optoelectronic components Grant 5,352,566 - Springer , et al. October 4, 1 | 1994-10-04 |
| Pipe milling tool blade and method of dressing same Grant 5,012,863 - Springer May 7, 1 | 1991-05-07 |
| Electrode array for an electrooptical facsimile recorder and method of controlling said electrode array Grant 4,899,223 - Springer , et al. February 6, 1 | 1990-02-06 |
| Variable outside diameter tool for use in pikewells Grant 4,842,082 - Springer June 27, 1 | 1989-06-27 |
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