Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6313909 | Fiber defect detection apparatus and method | David H. Smithgall, Sr. | 2001-11-06 |
| 4973343 | Optical fiber coating control apparatus | David H. Smithgall, Sr. | 1990-11-27 |
| 4957526 | Optical fiber coating control process | David H. Smithgall, Sr. | 1990-09-18 |
| 4952226 | Lightguide coating control | David H. Smithgall, Sr. | 1990-08-28 |
| 4594763 | Method and apparatus for inserting a glass rod into a glass tube | John R. Nis, Joseph Sanchez, Carroll D. Spainhour, Robert P. Stawicki | 1986-06-17 |
| 4553706 | Lightguide fiber spool changeover technique | David H. Smithgall, Sr. | 1985-11-19 |
| 4545542 | Lightguide fiber spool changeover technique | Daryl L. Myers, David H. Smithgall, Sr. | 1985-10-08 |
| 4195791 | Catenary controller | — | 1980-04-01 |