| Patents for Walworth Mfg. Co. |
Patents 1 -
14
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 47,543 | May 02, 1865 | B.S. Hill | Die for Cutting Male-Screw Threads |
 | 95,744 | Oct. 12, 1869 | D.C. Stillson | Improvement in Pipe-Wrenches |
 | 126,161 | Apr. 30, 1872 | D.C. Stillson | Improvement in Pipe-Wrenches |
 | 184,686 | Nov. 21, 1876 | J. Miller | Machines for Tapping Pipes Under Pressure |
 | 262,263 | Aug. 08, 1882 | C.C. Walworth | Improvement in Pipe-Wrenches |
 | 279,032 | Jun. 05, 1883 | G.W. Smith | Hand drilling-machine |
 | 580,685 | Apr. 13, 1897 | O.B. Hall | Pipe Wrench |
 | 871,436 | Nov. 19, 1907 | R. Parmelee | Pipe Wrench |
 | D44,125 | Jun. 03, 1913 | H.C. Earle | Wrench Bar |
 | 1,271,734 | Jul. 09, 1918 | T.W. Little | Wrench |
 | 1,275,334 | Aug. 13, 1918 | B. Watts | Pipe Wrench |
 | 1,711,083 | Apr. 30, 1929 | A.O. Brungardt | Process of Making Wrenches |
 | 1,862,001 | Jun. 07, 1932 | A.O. Brungardt | Process of Making Wrenches |
 | 1,862,002 | Jun. 07, 1932 | A.O. Brungardt | Pipe Wrench |
