| Patents Granted on 1928-04-?? |
Patents 1 -
15
of 43
      |
| Number | Date | Patentee | Title | Type |
| 1,664,583 | Apr. 03, 1928 | E.O. Wheelock | Snap Gage | special purpose gauges |
| 1,664,622 | Apr. 03, 1928 | W.F. Groene | Crank Shaft Lathe Chuck | metal lathe chucks |
| 1,664,637 | Apr. 03, 1928 | P.M. Wood, H.R. Merseles | Washing machine | |
| 1,664,741 | Apr. 03, 1928 | J.W. Durkee | Relieving Attachment | metal lathe accessories and attachments |
| 1,664,745 | Apr. 03, 1928 | F.O. Hoagland | Fluid Pump | oil pumps |
| 1,664,851 | Apr. 03, 1928 | G.M. Class | Tool Post | lathe tool holders and tool posts |
| 1,664,888 | Apr. 03, 1928 | D.C. Klausmeyer | Nested Control for Both Clamp and Speeds | metalworking machine mechanisms |
| 1,664,889 | Apr. 03, 1928 | D.C. Klausmeyer | Detachable Gear Unit | metalworking machine gearing |
| 1,664,906 | Apr. 03, 1928 | . | Handsaw | |
| 1,664,919 | Apr. 03, 1928 | E. Ek | Operating device | wood planer accessories |
| 1,664,983 | Apr. 03, 1928 | G.C. Kimmel | Automatic Coolant-Arresting Mechanism | grinding machines |
| 1,665,084 | Apr. 03, 1928 | J.E. Caster | Grinding Machinery | grinding machines |
| 1,665,090 | Apr. 03, 1928 | D.E. Gommel | Hack Saw | |
| 1,665,160 | Apr. 03, 1928 | S. Einstein, F.S. Haas, W. Peaslee | Automatic Size-Grinding Machine | grinding machines |
| GB-275,671 | Apr. 05, 1928 | n. listed | Improvements in Bearings for Machine Tools | cylindrical grinders |
