Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5289117 | Testing of integrated circuit devices on loaded printed circuit | David R. Van Loan, Charles J. Johnston | 1994-02-22 |
| 5270641 | Dual side access test fixture | David R. Van Loan, Charles J. Johnston, David Wilkie | 1993-12-14 |
| 5252916 | Pneumatic test fixture with springless test probes | — | 1993-10-12 |
| 5247246 | Testing of integrated circuit devices on loaded printed circuit boards | David R. Van Loan, Charles J. Johnston | 1993-09-21 |
| 5233290 | Switch probe | — | 1993-08-03 |
| 5180976 | Integrated circuit carrier having built-in circuit verification | David R. Van Loan, Charles J. Johnston | 1993-01-19 |
| 5134280 | Optical fiber test probe having a sleeve-like plunger movable in a barrel | Charles J. Johnston | 1992-07-28 |
| 5049813 | Testing of integrated circuit devices on loaded printed circuit boards | David R. Van Loan, Charles J. Johnston | 1991-09-17 |
| 5045780 | Electrical test probe contact tip | — | 1991-09-03 |
| 5032787 | Electrical test probe having rotational control of the probe shaft | Charles J. Johnston | 1991-07-16 |
| 4983909 | Repetitive-switching | Charles J. Johnston | 1991-01-08 |
| 4720275 | Quick termination apparatus and method for electrical connector | Charles J. Johnston | 1988-01-19 |