| 发明名称 |
Method of making carpet underlay |
| 摘要 |
A method of making a carpet underlay is provided wherein the underlay is comprised of a sponge rubber body having a load-carrying surface defined by a plurality of cooperating closed-area coplanar portions which define the major part of the area of a plan view of such body.
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| 申请公布号 |
US3979489(A) |
申请公布日期 |
1976.09.07 |
| 申请号 |
US19750590663 |
申请日期 |
1975.06.26 |
| 申请人 |
COLONIAL RUBBER WORKS, INC. |
发明人 |
SPRAGUE, GEORGE R. |
| 分类号 |
A47G27/04;B29C47/34;B29D99/00;D06N7/00;(IPC1-7):B29D27/00 |
主分类号 |
A47G27/04 |
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