| 6926063 |
Method for conditioning foundry moulding sand and a device therefor |
Paul Eirich, Hubert Eirich |
2005-08-09 |
| 4997357 |
Apparatus for treatment of power station residues |
Hubert Eirich, Paul Eirich, Herbert Durr |
1991-03-05 |
| 4854715 |
Pressure-resistant mixer |
Paul Eirich, Hubert Eirich |
1989-08-08 |
| 4758372 |
Method of producing lead paste for batteries |
Hubert Eirich, Paul Eirich |
1988-07-19 |
| 4744829 |
Process for producing agglomerates which are resistant to leaching out |
Hubert Eirich, Paul Eirich |
1988-05-17 |
| 4681267 |
Method of regenerating old casting sand |
Dieter S. Leidel, Hubert Eirich, Paul Eirich |
1987-07-21 |
| 4624003 |
Apparatus for heating electrically conductive bulk materials |
Paul Eirich, Hubert Eirich, Erwin Goldschmidt |
1986-11-18 |
| 4569025 |
Method of preparing foundrys and by measuring moisture and compressibility |
Paul Eirich, Hubert Eirich |
1986-02-04 |
| 4562970 |
Apparatus for opening and closing the outlet aperture of a processing machine |
Paul Eirich, Hubert Eirich |
1986-01-07 |
| 4560283 |
Apparatus for closing and continuously emptying the container of a treatment machine |
Paul Eirich, Hubert Eirich, Erwin Goldschmidt |
1985-12-24 |
| 4186592 |
Method of measuring the moisture content in flowable materials and apparatus for carrying out the method |
Hubert Eirich, Paul Eirich, Josef Hasenhundl, Adolf Spengler |
1980-02-05 |