| 2171259 | Process for welding film | |||
| 2425686 | Thermostatic control of electric heating pads | |||
| 2499961 | Electric heating unit | |||
| 2621423 | Laundry apparatus | |||
| 2680468 | Laminating machine | |||
| 2750310 | Manufacture process of doped germanium crystals | |||
| 2814328 | Label applying attachment for bread wrapping machines | |||
| 2822030 | Heat-sealing machine | |||
| 2944587 |
| GB421915A | ||||
| AU122807B |