| 摘要 |
<p>514,563. Plywood. MOOS, W. H. May 10, 1938, No. 13928. [Class 145 (ii)] Layers of a thermoplastic composition having a basis bf an organic derivative of cellulose alternate with layers of wood which are thinner than the layers of composition. Reference is made to various 'chemical compositions with or without plasticisers and volatile solvents. The composition may be used in powder form.</p> |
