| 12390957 |
Mould core for a mould for producing hollow concrete bodies, and a moulding device having a mould core of this kind |
Ulrich Schlüsselbauer |
2025-08-19 |
| 10252443 |
Method for producing concrete pipes having a plastic inner pipe |
— |
2019-04-09 |
| 10189179 |
System and method for producing tubular concrete products |
Ulrich Schlüsselbauer |
2019-01-29 |
| 8262977 |
Process for the manufacture of a shaft bottom |
— |
2012-09-11 |
| 7947349 |
Moulded piece for a shaft bottom |
— |
2011-05-24 |
| 7922179 |
Cast-in-place gasket for pipe joints |
William C. Andrick |
2011-04-12 |
| 7637189 |
Apparatus for face-side machining of a profile element forming a negative mold for the branch of a channel in a shaft floor |
— |
2009-12-29 |
| 7614327 |
Device for processing the contact surface of a mold profile, which forms a negative mold for a shaft floor drain and is possibly assembled from profile parts, made of thermoplastic foam |
— |
2009-11-10 |
| 6754941 |
Apparatus for pulling a molding ring off a neck of a concrete tubular workpiece |
— |
2004-06-29 |
| 6575724 |
Apparatus for the production of ring-shaped bodies from concrete |
— |
2003-06-10 |
| 6464443 |
Installation for hardening tubular concrete workpiece |
— |
2002-10-15 |
| 6000904 |
Apparatus for storing and conveying standing, tubular workpieces made of concrete |
— |
1999-12-14 |
| 5894858 |
Device for shutting off the feed or discharge pipe of a mobility separator |
— |
1999-04-20 |
| 5533885 |
Apparatus for manufacturing annular or tubular workpieces from concrete |
— |
1996-07-09 |