| Patents for Hisey-Wolf Machine Co. |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 712,537 | Nov. 04, 1902 | C.S. Hisey | Electric grinding device | handheld power tools |
| 752,223 | Feb. 16, 1904 | C.S. Hisey | Variable-speed mechanism | handheld power drills |
| 1,241,659 | Oct. 02, 1917 | E. Ritz, Jr. | Electric portable grinder | handheld grinders |
| 1,259,130 | Mar. 12, 1918 | E. Ritz, Jr. | Internal and External Grinder | |
| 1,259,131 | Mar. 12, 1918 | E. Ritz, Jr. | Grinder | |
| 1,259,132 | Mar. 12, 1918 | E. Ritz, Jr. | Portable electric tool | handheld grinders |
| 1,380,595 | Jun. 07, 1921 | E. Ritz, Jr. | Quick-throw electric switch | handheld power tools |
| 1,525,691 | Feb. 10, 1925 | G.H. Poth | Electric motor | handheld power tools |
| 1,638,459 | Aug. 09, 1927 | E. Ritz | Grinding-wheel guard | bench or pedestal grinders |
| 1,938,723 | Dec. 12, 1933 | E. Ritz, Jr. | Grinding machine | bench or pedestal grinders |
| 1,953,133 | Apr. 03, 1934 | E. Ritz, Jr. | Construction of grinders for use in lathes or the like | wood lathe accessories |
| 1,982,483 | Nov. 27, 1934 | E. Ritz, Jr. | Grinding machine | bench or pedestal grinders |
| 2,003,495 | Jun. 04, 1935 | E. Ritz, Jr. | Grinding machine | bench or pedestal grinders |
| 2,073,967 | Mar. 16, 1937 | A. Kiefer | Bolt turning machine and the like | |
