| Patents for James N. Heald |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 386,921 | Jul. 31, 1888 | L.S. Heald | Tedder | |
| 500,128 | Jun. 27, 1893 | J.N. Heald | Crimping Machine | shoe and boot making machines |
| 547,991 | Oct. 15, 1895 | L.S. Heald, J.N. Heald | Woodworking-machine | window making machines |
| 567,135 | Sep. 08, 1896 | L.S. Heald | Rotary cutter | window making machines |
| 630,536 | Aug. 08, 1899 | L.S. Heald, J.N. Heald | Drill-grinding machine | sharpening machines |
| 684,236 | Oct. 08, 1901 | J.N. Heald | Center Grinding Attachment for Lathes | metal lathe accessories and attachments |
| 734,863 | Jul. 28, 1903 | L.S. Heald, J.N. Heald | Sash-trimming machine | miter machines |
| 744,340 | Nov. 17, 1903 | J.N. Heald | Grinding Attachment for Lathes | metal lathe accessories and attachments |
| 810,426 | Jan. 23, 1906 | R.L. Morgan, J.N. Heald | Grinding-machine | surface grinders |
| 1,285,159 | Nov. 19, 1918 | J.N. Heald | Grinding Machine | |
| 1,301,937 | Apr. 29, 1919 | J.N. Heald, A.M. Drake | Belt-tightener | grinding machines |
