Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373235 | System and method using portable wall engaging ferromagnetic particle impregnated target medium for electromagnetically measuring distance between oposing walls of a structure | William G. Clark, Jr., Lee W. Burtner, Michael J. Metala | 1994-12-13 |
| 5200704 | System and method including a buried flexible sheet target impregnated with ferromagnetic particles and eddy current probe for determining proximity of a non-conductive underground structure | William G. Clark, Jr., Lee W. Burtner, Michael J. Metala | 1993-04-06 |
| 5100610 | Tube plug inspection system | William E. Pirl, Edward A. Ray, Annette M. Costlow, Charles H. Roth, Jr., David A. Chizmar | 1992-03-31 |
| 4992735 | System and method for inspecting metallic plugs in heat exchanger tubes using a radially extendible probe | William K. Cullen, Charles H. Roth, Jr., Lee W. Burtner, David A. Chizmar, Lawrence Galata | 1991-02-12 |
| 4876506 | Apparatus and method for inspecting the profile of the inner wall of a tube employing a wall follower and an eddy current probe | Stephen D. Brown, Warren R. Junker | 1989-10-24 |
| 4725883 | Optical profilometry system for tubular products | William G. Clark, Jr., Lee W. Burtner | 1988-02-16 |