| 2450249 | Automatic pin setting machine | |||
| 2443288 | Screw conveyer | |||
| 2389643 | Ball and pin handling mechanism for bowling pin setting machines | |||
| 2388708 | Pin setting mechanism for bowling alleys | |||
| 2066206 | Conveyer | |||
| 1911436 | N/A | |||
| 1896383 | Pin-setting machine | |||
| 1808135 | Automatic vertical elevator | |||
| 1375835 | Automatic bowling mechanism | |||
| 1122622 | N/A | |||
| 0833715 | N/A | |||
| 0700987 | N/A | |||
| 0372950 | N/A |
| DE276467C |