Hedwin Corp
Hedwin CorActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3351225A | Partition for dual chambered container and method of formin… | Expired / Lapsed | 1965-03-24 | 1967-11-07 | 0 | Details |
| US3082927A | Lined container | Expired / Lapsed | 1960-07-26 | 1963-03-26 | 2 | Details |
| US2950029A | Container | Expired / Lapsed | 1956-10-29 | 1960-08-23 | 0 | Details |
| US2765493A | Apparatus for forming and embossing thermoplastic materials | Expired / Lapsed | 1951-03-14 | 1956-10-09 | 0 | Details |
| US2748805A | Reinforced spiral plastic pipe | Expired / Lapsed | 1953-03-02 | 1956-06-05 | 1 | Details |
| US2748401A | Extruded flexible and hollow articles and method of making … | Expired / Lapsed | 1952-06-30 | 1956-06-05 | 0 | Details |
| US2748673A | Liner for composite containers | Expired / Lapsed | 1951-03-09 | 1956-06-05 | 0 | Details |