Gutschmidt; Holger
Patent Applications and Registrations
Patent applications and USPTO patent grants for Gutschmidt; Holger.The latest application filed is for "sealing arrangement for shaft and tunnel constructions".
- Gutschmidt; Holger - Neu Wulmstorf DE
| Patent | Date |
|---|---|
| Sealing arrangement for shaft and tunnel constructions Grant 9,222,358 - Hoeft , et al. December 29, 2 | 2015-12-29 |
| Sealing Arrangement For Shaft And Tunnel Constructions App 20120328369 - Hoeft; Heiko ; et al. | 2012-12-27 |
| Sealing arrangement composed of different types of polymer material App 20090148658 - Gutschmidt; Holger ; et al. | 2009-06-11 |
| Seal system App 20030168819 - Gutschmidt, Holger | 2003-09-11 |
| Sealing assembly for tunnel construction sections Grant 6,592,296 - Gutschmidt , et al. July 15, 2 | 2003-07-15 |
| Sealing arrangement Grant 6,575,664 - Kassel , et al. June 10, 2 | 2003-06-10 |
| Sealing assembly for tunnel construction sections App 20020164211 - Gutschmidt, Holger ; et al. | 2002-11-07 |
| Seal arrangement for tubular tunnel segments Grant 5,888,023 - Grabe , et al. March 30, 1 | 1999-03-30 |
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