| All Patents in class 280 |
Patents 256 -
270
of 313
      |
| Number | Date | Patentee | Title | Type |
| 1,658,430 | Feb. 07, 1928 | F.V. Donald | Tractor hitch for lawn mowers | |
| 1,674,813 | Jun. 26, 1928 | I.A. Weaver, G.E. Weaver | Propelling jack | |
| 1,701,107 | Feb. 05, 1929 | R. Hamilton | Drawbar | tractors |
| 1,706,267 | Mar. 19, 1929 | W.D. Van De Mark, G.G. Raymond | Basket-truck | |
| 1,717,384 | Jun. 18, 1929 | G.O. Johnson | Coaster-wagon brake | |
| 1,735,769 | Nov. 12, 1929 | A.W. Manzel | Stabilizer | body and axle parts |
| 1,774,835 | Sep. 02, 1930 | A.O. Lombard | Traction device | tracks |
| 1,776,408 | Sep. 23, 1930 | P.R. Thompson, W.I. Ball | Hitch Mechanism for Tractors | tractors |
| 1,800,341 | Apr. 14, 1931 | J.D. Davies | Rotary abrasive machine | handheld power sanders |
| 1,800,888 | Apr. 14, 1931 | G.O. Johnson | Juvenile vehicle construction | |
| 1,828,434 | Oct. 20, 1931 | A.B. Odell | Combined table and truck | |
| 1,844,585 | Feb. 09, 1932 | R.E. Manley | High lift jack | vehicle mechanic |
| 1,886,457 | Nov. 08, 1932 | F.D. Winkley | Transplanting Machine | crop planters |
| 2,062,520 | Dec. 01, 1936 | A.W. Mall | Portable power tool and mounting | |
| 2,090,324 | Aug. 17, 1937 | J. Boisvert | Road grader attachment | graders and dozers |
