| Patents for Blackhawk Mfg. Co. |
Patents 1 -
10
of 80
      |
| Picture | Number | Date | Patentee | Title |
 | 1,443,413 | Jan. 30, 1923 | J. Johnson | Socket Wrench |
 | 1,574,136 | Feb. 23, 1926 | H.E. Tautz, F.E. Dion | Tool grip |
 | 1,685,503 | Sep. 25, 1928 | E.M. Pfauser | Socket Wrench |
 | 1,764,690 | Jun. 17, 1930 | E.M. Pfauser | Tool Handle |
 | 1,797,730 | Mar. 24, 1931 | E.M. Pfauser | Socket Attachment for Tools |
 | 1,807,134 | May 26, 1931 | E.M. Pfauser | Socket Wrench |
 | 1,873,472 | Aug. 23, 1932 | E.M. Pfauser | Socket Wrench |
 | 1,881,029 | Oct. 04, 1932 | E.M. Pfauser | Socket Wrench |
 | 1,896,645 | Feb. 07, 1933 | E.M. Pfauser | Coupling For Socket Wrenches |
 | 1,927,844 | Sep. 26, 1933 | E.M. Pfauser | Socket Wrench |
