| Patents Granted on 1931-08-?? |
Patents 1 -
15
of 45
      |
| Number | Date | Patentee | Title | Type |
| 1,816,853 | Aug. 04, 1931 | A.R. Jayne | Wood patch making machine | specialty woodworking machines |
| 1,816,960 | Aug. 04, 1931 | F.B. Cockburn | Apron Disk Transmission Mechcanism | metal lathe mechanisms |
| 1,817,036 | Aug. 04, 1931 | R.S. Condon, E.J. Kearney | Rate change device | metalworking machine gearing |
| 1,817,037 | Aug. 04, 1931 | C.L. Mattison | Conveyer pad | woodworking machine stockfeeding mechanisms |
| 1,817,083 | Aug. 04, 1931 | J.B. Armitage, E.J. Kearney | Machine Tool | milling machines |
| 1,817,224 | Aug. 04, 1931 | D.J. Ajouelo | Hand nailing implement | shoe and boot making machines |
| 1,817,390 | Aug. 04, 1931 | A.J. Meyer | Internal Combustion Engine | internal combustion engine valves |
| 1,817,493 | Aug. 04, 1931 | C.L. Mattison | Turning machine | wood lathes |
| 1,817,629 | Aug. 04, 1931 | E.R. Klemm | Engine governor | internal combustion engine governors |
| 1,817,637 | Aug. 04, 1931 | P.V. Miller | Snap Thread Gauge | thread gages |
| GB-354,386 | Aug. 10, 1931 | H. Shipley, G. Adcock | Multiple Spindle Drilling And Like Machines | multiple spindle drill presses |
| GB-354,723 | Aug. 10, 1931 | H. Shipley, G. Adcock | Improved Feed Mechanism For Drilling And Similar Machines | metalworking machine mechanisms |
| CA-314,197 | Aug. 11, 1931 | A.A. Criqui | Centrifugal fan | |
| 1,817,910 | Aug. 11, 1931 | R.S. Brown | Chain mortiser | mortising machines |
| 1,817,944 | Aug. 11, 1931 | A. Rosner | Power Plant | power plants |
