Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335966 | Method of preparing concrete mixtures | Joachim Rapp | 1982-06-22 |
| 4318177 | Method of feeding water to a concrete mix | Joachim Rapp | 1982-03-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335966 | Method of preparing concrete mixtures | Joachim Rapp | 1982-06-22 |
| 4318177 | Method of feeding water to a concrete mix | Joachim Rapp | 1982-03-02 |