| 2810347 | Fluid pump | 1957-10-22 | ||
| 2760436 | Pump for fluid and semi-fluid material such as plaster and the like | 1956-08-28 | ||
| 2677393 | Radially expanding bellows | 1954-05-04 | ||
| 2412397 | Flexible tube pump | 1946-12-10 | ||
| 2383193 | Diaphragm pump | 1945-08-21 | ||
| 2356738 | Pump | 1944-08-29 | ||
| 1184371 | N/A | 1916-05-23 | ||
| 0975519 | N/A | 1910-11-15 |
| FR385651A | ||||
| FR746015A | 1933-05-20 | |||
| DE894503C | 1953-10-26 |