| Patents for William A. Barr |
Patents 16 -
30
of 53
      |
| Number | Date | Patentee | Title | Type |
| 819,536 | May 01, 1906 | Z.T. Furbish | Shifter-lock for pawl-and-ratchet tools | spiral screwdrivers |
| 834,198 | Oct. 23, 1906 | T.J. Fegley | Ice-cream freezer | |
| 846,193 | Mar. 05, 1907 | J. Fellows | Centrifugal clutch | industrial machine clutches |
| 862,653 | Aug. 06, 1907 | C.A. Smith, H.A. Pedrick | Rock Drill | |
| 864,631 | Aug. 27, 1907 | T.J. Fegley | Ice-cream-freezer can | |
| 864,632 | Aug. 27, 1907 | T.J. Fegley | Ice-cream freezer | |
| 882,936 | Mar. 24, 1908 | T.J. Fegley | Ice-cream freezer | |
| 894,673 | Jul. 28, 1908 | G.O. Leopold | Ratchet mechanism | ratcheting screwdrivers |
| 902,387 | Oct. 27, 1908 | T.J. Fegley | Detachable-blade screw-driver | screwdrivers |
| 902,957 | Nov. 03, 1908 | Z.T. Furbish | Locking mechanism for ratchet screw-drivers | spiral screwdrivers |
| 906,902 | Dec. 15, 1908 | G.O. Leopold | Speed-change gear | eggbeater drills |
| 914,978 | Mar. 09, 1909 | W.H. Ridgway | Overflow device for pressure-tanks, &c. | hoists, winches, come-alongs |
| 917,319 | Apr. 06, 1909 | G.O. Leopold | Breast-drill | breast drills |
| 936,793 | Oct. 12, 1909 | C.R. Middleton | Cutting Tool for Planers, Lathes, &c. | lathe tools |
| 939,042 | Nov. 02, 1909 | G.O. Leopold | Gearing | eggbeater drills |
