| Patents for William S. Bellows |
Patents 16 -
30
of 31
      |
| Number | Date | Patentee | Title | Type |
| 665,316 | Jan. 01, 1901 | C.P. Fay | Protractor | protractors |
| 741,743 | Oct. 20, 1903 | C.E. Van Norman | Valve for compound engine | compound steam engines |
| 752,365 | Feb. 16, 1904 | J.H. Spear | Spokeshave | spokeshaves |
| 761,707 | Jun. 07, 1904 | J.J. Peyman | Adjustable Square | squares |
| 826,971 | Jul. 24, 1906 | B.F. Stowell | Truing-up Indicator | measurement gauges |
| 832,575 | Oct. 02, 1906 | A.L. Gagnon | Quick-Action Monkey Wrench | quick adjust wrenches |
| 875,328 | Dec. 31, 1907 | D.S. Courtney | Woodworking-machine | spool or bobbin machines |
| 938,803 | Nov. 02, 1909 | C.E. Van Norman | Metal-working machinery | cylindrical grinders |
| 973,881 | Oct. 25, 1910 | D. Rioux | Spiral tool-driver | spiral screwdrivers |
| 979,903 | Dec. 27, 1910 | F.D. Van Norman | Tool-holder for lathes | lathe tool holders and tool posts |
| RE13,584 | Jun. 24, 1913 | F.D. Van Norman | Tool-holder for lathes | lathe tool holders and tool posts |
| 1,099,218 | Jun. 09, 1914 | F.D. Van Norman | Spindle-bearing-lubricating device | grinders |
| 1,102,558 | Jul. 07, 1914 | C.E. Van Norman | Machine for grinding bearing-races | grinders |
| RE13,892 | Mar. 16, 1915 | C.E. Van Norman | Machine for grinding bearing-races | grinding machines |
| 1,141,854 | Jun. 01, 1915 | F.D. Van Norman | Tool-holder for lathes | lathe tool holders and tool posts |
