| Patents for Keystone Mfg. Co. |
Patents 1 -
10
of 17
      |
| Picture | Number | Date | Patentee | Title |
 | 288,098 | Nov. 06, 1883 | C.H. Myers | Wrench |
| | 358,173 | Feb. 22, 1887 | C.J. Sturgeon | Circular sawing machine |
 | 446,072 | Feb. 10, 1891 | C.H. Myers | Combined Ratchet Wrench & Screwdriver |
 | 446,073 | Feb. 10, 1891 | C.H. Myers | Ratchet Wrench & Drill |
 | 446,074 | Feb. 10, 1891 | C.H. Myers | Attachment for Metal Planers |
 | 446,075 | Feb. 10, 1891 | C.H. Myers | Combined Ratchet Wrench & Boring Bit |
 | 539,423 | May 21, 1895 | J. Emig | Ratchet Drill |
| | 541,875 | Jul. 02, 1895 | G.W. Packer | Corn Harvester |
| | 584,889 | Jun. 22, 1897 | G.W. Packer | Corn Husker |
| | 637,534 | Nov. 21, 1899 | R.S. Swartout | Combined Corn Husker and Fodder Shredder |
