Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login |
Quick search: |
All Patents in class 417/320 | |||||
Number | Date | Patentee | Title | Type | |
8,172X | Apr. 28, 1834 | J.A. Pitts, H.A. Pitts | Endless chain pump | chain pumps | |
172,395 | Jan. 18, 1876 | A.D. Crosby | Chain Pump | chain pumps | |
343,685 | Jun. 15, 1886 | A. Wyckoff | Bucket for chain-pumps |