| All Patents in class 310 |
Patents 691 -
705
of 1020
      |
| Number | Date | Patentee | Title | Type |
| 1,794,029 | Feb. 24, 1931 | G.T. Pfleger | Cooling means for motors | motor cooling |
| 1,794,649 | Mar. 03, 1931 | A.W. Siler | Protecting and Cooling Means for Dynamo Electric Machines | motor cooling |
| 1,794,663 | Mar. 03, 1931 | G.R. Anderson | Protecting and heat-radiating means for electric motors | repulsion start induction run motors |
| 1,797,253 | Mar. 24, 1931 | C.S. Weyandt | Reciprocating motor | handheld power tools |
| 1,803,543 | May 05, 1931 | P. Brown | Magneto | ignition systems |
| 1,805,164 | May 12, 1931 | R.L. Carter | Shaft holder for applying chucks | handheld routers |
| RE18,093 | Jun. 09, 1931 | E.P. Larsh | Short circuiting device for motor commutators | repulsion start induction run motors |
| 1,812,748 | Jun. 30, 1931 | A. Kayser | Dynamo electric machine | electric motors |
| 1,814,417 | Jul. 14, 1931 | S.B. Taylor | Fan for cooling dynamo electric machines, etc. | motor cooling |
| 1,819,140 | Aug. 18, 1931 | C.S. Weyandt, H.E. Fox | Reciprocating motor | handheld power tools |
| 1,819,182 | Aug. 18, 1931 | J.F. Lincoln | Dynamo Electric Machine | electric generators |
| 1,823,555 | Sep. 15, 1931 | J.M. Naul | Electric phonograph motor | |
| 1,827,323 | Oct. 13, 1931 | T.G. Louis | Magneto | ignition systems |
| 1,828,540 | Oct. 20, 1931 | W.A. Marschke | Buffer or grinder | |
| 1,828,903 | Oct. 27, 1931 | W. Moretti | Electric tool | handheld power drills |
