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| All Patents of Type: vacuum pumps | |||||
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| Number | Date | Patentee | Title | Type | |
| 924,024 | Jun. 08, 1909 | J.T. Wilkin | Vacuum-pump | vacuum pumps | |
| 958,345 | May 17, 1910 | J.T. Wilkin | Vacuum-pump | vacuum pumps | |
| 1,101,143 | Jun. 23, 1914 | H. Neville | Vacuum Pump | vacuum pumps | |