| Patents for North Brothers Manufacturing Co. |
Patents 16 -
30
of 137
      |
| Number | Date | Patentee | Title | Type |
| 666,508 | Jan. 22, 1901 | Z.T. Furbish | Ratchet mechanism | spiral screwdrivers |
| 666,509 | Jan. 22, 1901 | Z.T. Furbish | Reducing-Chuck | drill chucks |
| 666,510 | Jan. 22, 1901 | Z.T. Furbish | Magazine Screw-Driver and Tool-Holder | tool holders |
| 666,511 | Jan. 22, 1901 | Z.T. Furbish | Supplementary Drill Chuck | drill chucks |
| 666,512 | Jan. 22, 1901 | Z.T. Furbish | Screwdriver, &c., Ratchet Handle | ratcheting screwdrivers |
| 676,742 | Jun. 18, 1901 | Z.T. Furbish | Chuck | drill chucks |
| 685,677 | Oct. 29, 1901 | Z.T. Furbish | Ball-Chuck | drill chucks |
| 685,678 | Oct. 29, 1901 | Z.T. Furbish | Magazine spring drill | hand drills |
| 693,256 | Feb. 11, 1902 | Z.T. Furbish | Chuck | drill chucks |
| 701,195 | May 27, 1902 | Z.T. Furbish | Means of Securing Handles or Rests to Tools | screwdriver handles |
| 719,782 | Feb. 03, 1903 | Z.T. Furbish | Pliers | pliers |
| 719,783 | Feb. 03, 1903 | Z.T. Furbish | Calipers | dividers |
| 726,669 | Apr. 28, 1903 | Z.T. Furbish | Drive-chain | |
| 750,182 | Jan. 19, 1904 | Z.T. Furbish | Reversible Screw-Driver | screwdriver mechanisms |
| 750,183 | Jan. 19, 1904 | Z.T. Furbish | Ratchet Screwdriver | ratcheting screwdrivers |
