Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Francis X. Gradich, David A. Chizmar | 1991-02-12 |