KOPPERS; MANFRED
Patent Applications and Registrations
Patent applications and USPTO patent grants for KOPPERS; MANFRED.The latest application filed is for "support for underground mining and tunnel construction".
- KOPPERS; MANFRED - Duisburg DE
| Patent | Date |
|---|---|
| Support For Underground Mining And Tunnel Construction App 20090202310 - KOPPERS; MANFRED | 2009-08-13 |
| Method of controlling the movement of a longwall excavation front, especially the face or breast of a coal seam Grant 4,887,935 - Koppers , et al. December 19, 1 | 1989-12-19 |
| Pressure measuring device Grant 4,843,886 - Koppers , et al. July 4, 1 | 1989-07-04 |
| Shut-off valve Grant 4,610,424 - Koppers , et al. September 9, 1 | 1986-09-09 |
| Rock anchor arrangement Grant 4,576,524 - Heintzmann , et al. March 18, 1 | 1986-03-18 |
| Rock anchoring arrangement Grant 4,440,526 - Koppers , et al. April 3, 1 | 1984-04-03 |
| Hydraulically operated mine prop with safety valve Grant 4,252,476 - Koppers , et al. February 24, 1 | 1981-02-24 |
| Canopy and shield structure for supporting a shield in a seam-like mine deposit Grant 4,089,181 - Koppers May 16, 1 | 1978-05-16 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 