| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Perley D. Cummings | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 109,591 | Nov. 29, 1870 | P.D. Cummings | Improvement in machines for making key-boards for wood pavements | |
 | 110,440 | Dec. 27, 1870 | P.D. Cummings | Improvement in machines for grooving blocks for wood pavements | |
 | 139,457 | Jun. 03, 1873 | P.D. Cummings, M. Smith, J.C. Jordan | Improvement in machines for cutting matches | |
 | 145,488 | Dec. 16, 1873 | P.D. Cummings | Grinding Machines | |