Random triples
| Subject | Object |
|---|---|
| gptkb:Charles_Goodyear | Process for improving rubber |
| gptkb:Joseph_Glidden | Innovative design for barbed wire |
| gptkb:Baltzar_von_Platen | Platen press mechanism |
| gptkb:Joseph_Ressel | screw propeller design patent |
| gptkb:Thomas_Newcomen | First practical steam engine patent |
| gptkb:Laszlo_Biro | ballpoint pen mechanism |