| All Patents in class 403/328 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 267,060 | Nov. 07, 1882 | E. Buell | Tool Handle | screwdrivers |
| 814,020 | Mar. 06, 1906 | H.A. Clifford | Convertible Tool Handle | screwdriver handles |
| 1,371,750 | Mar. 15, 1921 | W.R. Fox | Flexible shaft-coupling | |
| 1,422,058 | Jul. 04, 1922 | V. Hovanec | Tool Holder | drilling and boring tool holders |
| 1,566,849 | Dec. 22, 1925 | W.R. Fox | Coupling for flexible shafting | industrial machine shaft couplings |
| 1,790,238 | Jan. 27, 1931 | W.F. Klein | Socket Connection | socket wrenches |
| 1,896,645 | Feb. 07, 1933 | E.M. Pfauser | Coupling For Socket Wrenches | socket wrenches |
| 1,927,844 | Sep. 26, 1933 | E.M. Pfauser | Socket Wrench | wrench handle components |
| RE19,093 | Feb. 27, 1934 | E.M. Pfauser | Coupling For Socket Wrenches | socket wrenches |
| 1,954,049 | Apr. 10, 1934 | R.K. Jeffery | Tool Holder | tool holders |
| RE19,287 | Aug. 21, 1934 | E.M. Pfauser | Coupling For Socket Wrenches | socket wrenches |
| 1,982,008 | Nov. 27, 1934 | E.M. Pfauser, S. Mandl | Coupling | socket wrenches |
| 2,008,367 | Jul. 16, 1935 | H.A. Rhinevault | Detent | socket wrenches |
| 2,162,359 | Jun. 13, 1939 | H.A. Rhinevault | Lock for Socket Wrenches, etc. | socket wrenches |
| 2,190,081 | Feb. 13, 1940 | E.M. Pfauser | Coupling | wrench components |
