| Patents for H. A. Chapin |
Patents 1 -
15
of 38
      |
| Number | Date | Patentee | Title | Type |
| 212,986 | Mar. 04, 1879 | L.C. Rodier | Faucet Handle Depth Adjuster | plane cutter adjustments |
| 251,182 | Dec. 20, 1881 | O.W. Bullock | Tweezers | watchmaker |
| 251,183 | Dec. 20, 1881 | O.W. Bullock | Combination watch-hand remover and case-opener | watchmaker |
| 251,200 | Dec. 20, 1881 | C.P. Fay | Calipers | calipers |
| 264,339 | Sep. 12, 1882 | J.A. Reece | Beam Calipers | measurement gauges |
| 264,341 | Sep. 12, 1882 | F.B. Richards | Combination Tool | bevel squares |
| 281,068 | Jul. 10, 1883 | J.H. Hoague | Hand-drill | hand drills |
| 282,966 | Aug. 14, 1883 | E. Smith, J. Duckworth | Combined Protractor, Square, and Bevel | bevels |
| 286,097 | Oct. 02, 1883 | W. Wassung | Miter-box | miter boxes |
| 286,543 | Oct. 09, 1883 | A. Hyde | Wrench | wrench adjustment locks |
| 317,923 | May 12, 1885 | A. Call | Wrench | pipe and nut combination wrenches |
| 317,924 | May 12, 1885 | A. Call | Wrench | pipe and nut combination wrenches |
| 319,215 | Jun. 02, 1885 | C.P. Fay | Spring Calipers | gauges |
| 335,740 | Feb. 09, 1886 | J.H. Bullard | Calipers | calipers |
| 363,709 | May 24, 1887 | A.E. Whitmore | Micrometer-Gage | measurement gauges |
