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