|
US3149000A
|
Hydrophilic polyurethane sponge |
Expired / Lapsed
|
1961-12-15 |
1964-09-15 |
2 |
Details
|
|
CA665732A
|
Method of treating expanded material and product thereof |
Expired / Lapsed
|
— |
1963-06-25 |
0 |
Details
|
|
US3042631A
|
Polyurethane prepolymer and expanded product prepared there… |
Expired / Lapsed
|
1956-08-03 |
1962-07-03 |
2 |
Details
|
|
US2826338A
|
Receptacle |
Expired / Lapsed
|
1954-03-25 |
1958-03-11 |
0 |
Details
|