|
US5783271A
|
Biodegradable alipathic polyster, melt-extrusion film there… |
Expired / Lapsed
|
1996-04-24 |
1998-07-21 |
6 |
Details
|
|
US4535102A
|
Adhesive coating material |
Expired / Lapsed
|
1983-10-06 |
1985-08-13 |
27 |
Details
|
|
US3647086A
|
Cation exchange membrane and method of making same |
Expired / Lapsed
|
1969-07-09 |
1972-03-07 |
10 |
Details
|
|
US3423481A
|
Difficultly dyeable polymers containing copolymers of ethyl… |
Expired / Lapsed
|
1966-02-07 |
1969-01-21 |
0 |
Details
|