Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865051 | Apparatus for the continuous determination of two physical properties of the constituents of a smokable article | Meinhard Meyer, Jorn Ulrich, Friedrich Walther, Friedrich Weinhold | 1989-09-12 |
| 4848370 | Method for controlling at least two of the physical properties, decisive for the quality of the finished smokable article, of a material rod of filter or tabacco material | Friedrich Walther | 1989-07-18 |
| 4835605 | Method for the determination of a geometrical parameter for crimped, irregularly structured fibres | Klaus Melchior, Manfred Rueff | 1989-05-30 |