| Patents Granted on 1920-03-30 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| GB-141,104 | Mar. 30, 1920 | C.W. Harris | Improvements in the die-heads of screw-cutting machines | metal threading machines |
| 1,334,955 | Mar. 30, 1920 | F.G. Sjökvist, C.E. Johansson | Indicating Device for Measuring Apparatus and Measuring Tools | indicating calipers |
| 1,334,984 | Mar. 30, 1920 | J.B. Bourget | Sliding Gage of Precision | indicating calipers |
| 1,334,999 | Mar. 30, 1920 | C. Haley | Machinist's Gage | measurement gauges |
| 1,335,004 | Mar. 30, 1920 | D.H. Lehigh | Micrometer and Height Gage | micrometers |
| 1,335,050 | Mar. 30, 1920 | V.A. Fynn | Alternating-current motor | induction motors |
| 1,335,092 | Mar. 30, 1920 | L.H. Conley | Spoke Nipple Wrench For Wire Wheels | spoke nipple wrenches |
| 1,335,119 | Mar. 30, 1920 | T.G. Louis | Holding means for magnets | ignition systems |
| 1,335,310 | Mar. 30, 1920 | M.A. Yeakley | Internal-combustion engine | internal combustion engines |
| 1,335,333 | Mar. 30, 1920 | H. Hanson | Rule and Tool Holder | tool holders |
| 1,335,408 | Mar. 30, 1920 | W.I. Tuttle | Brace Construction | brace handles |
| 1,335,409 | Mar. 30, 1920 | W.I. Tuttle | Construction For Braces | brace wrenches |
| 1,335,466 | Mar. 30, 1920 | F.E. Stevenson | Extrusion Press | extrusion presses |
| 1,335,563 | Mar. 30, 1920 | J. Doig | Box-nailing machine | nailing machines |
| 1,335,626 | Mar. 30, 1920 | W.E. Villinger | Automatic stay-arm | |
