| Patents for H. A. Carhart |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 457,526 | Aug. 11, 1891 | A.L. Daly | Combined Tool | combination tools |
| 460,062 | Sep. 22, 1891 | H.J. Rosenberg | Revoluble Head Wrench | wrenches |
| 483,785 | Oct. 04, 1892 | G.S. Hilts | Pipe Wrench | chain and strap wrenches |
| 489,048 | Jan. 03, 1893 | L.A. Barber, F.L. Twiss | Pipe Wrench | chain and strap wrenches |
| 500,277 | Jun. 27, 1893 | G.W. Wood | Ratchet Wrench | wrench jaw components |
| 502,525 | Aug. 01, 1893 | W.H. Menehan | Combination Tool | wrench combination tools |
| 506,261 | Oct. 10, 1893 | H.J. Rosenberg | Wrench | nut wrenches |
| 510,441 | Dec. 12, 1893 | W.L. Pike | Improvements in Vehicle Wrenches | axle nut wrenches |
| 519,703 | May 15, 1894 | O.C. Ekman | Surface Gage | surface gauges |
