Method for making paper having the appearance of handmade paper |
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| 申请号 | US50687321 | 申请日 | 1921-10-10 | 公开(公告)号 | US1470675A | 公开(公告)日 | 1923-10-16 |
| 申请人 | AMERICAN WRITING PAPER COMPANY; | 发明人 | ARMSTRONG JAMES H A; | ||||
| 摘要 | |||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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