| Patents for Wm. Trapp & Co. |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 4,218 | Oct. 01, 1845 | W. Trapp, Jr. | Barrel machinery | cooper |
| RE132 | Mar. 10, 1849 | W. Trapp, Jr. | Improvement in barrel machinery | cooper |
| 28,701 | Jun. 12, 1860 | W. Trapp | Stave-machine | cooper |
| 43,933 | Aug. 23, 1864 | W. Trapp | Improvement in machines for dressing heads to barrels | cooper |
| 43,934 | Aug. 23, 1864 | W. Trapp | Improvement in machines for dressing staves to barrels | cooper |
| 43,935 | Aug. 23, 1864 | W. Trapp | Improvement in machine for jointing headings for barrels | cooper |
| RE1,946 | May 02, 1865 | W. Trapp, Jr. | Improvement in barrel-machinery | cooper |
| RE1,947 | May 02, 1865 | W. Trapp, Jr. | Improvement in barrel-machinery | cooper |
