| Patents for John W. Parker |
Patents 1 -
15
of 18
      |
| Number | Date | Patentee | Title | Type |
| 171,039 | Dec. 14, 1875 | J.W. Parker, T. Parker | Saw-Gummer | saw gummers |
| 1,283,193 | Oct. 29, 1918 | G.A. Humason | Drill | |
| 1,437,352 | Nov. 28, 1922 | J.W. Parker | Direct or Sight Reading Micrometer | measurement gauges |
| 1,437,353 | Nov. 28, 1922 | J.W. Parker | Revolution counter | rpm speed gauges and tachometers |
| 1,446,926 | Feb. 27, 1923 | J.W. Parker | Micrometer | micrometers |
| 1,461,005 | Jul. 03, 1923 | J.W. Parker | Micrometer Caliper | micrometers |
| 1,529,209 | Mar. 10, 1925 | J.W. Parker | Protractor | rules |
| 1,529,210 | Mar. 10, 1925 | J.W. Parker | Hook Rule | rule accessories |
| 1,553,875 | Sep. 15, 1925 | J.W. Parker | Micrometer Caliper | micrometers |
| 1,629,406 | May 17, 1927 | J.W. Parker | Micrometer Gage | micrometers |
| 1,755,152 | Apr. 15, 1930 | J.W. Parker | Radius Tool | radius gauges |
| 1,789,020 | Jan. 13, 1931 | J.W. Parker | Inside Caliper | |
| 1,803,283 | Apr. 28, 1931 | J.W. Parker | Measuring-Machine Micrometer | |
| 1,803,284 | Apr. 28, 1931 | J.W. Parker, M.K. Parkhurst | Measuring Gauge | |
| 1,835,807 | Dec. 08, 1931 | J.W. Parker | Measuring Machine | |
