Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779417 | Fastener having primary and secondary threads | Frank Bechtel | 1998-07-14 |
| 5746560 | Fastener having torque-absorbing ribs | Frank Bechtel | 1998-05-05 |
| 5183359 | Rotary fastener with anti-strip-out nibs | — | 1993-02-02 |
| 4576534 | Thread form for soft material | David Wagner | 1986-03-18 |
| 4534690 | Assymetrically shaped thread forming screw and method of making same | — | 1985-08-13 |
| 4518294 | Rotary fastener | — | 1985-05-21 |
| 4516893 | Sheet metal screw | — | 1985-05-14 |
| 4490082 | Fastener having an axially and radially undulating flange | — | 1984-12-25 |
| 4449873 | Fastener for attaching articles to a penetrable surface | — | 1984-05-22 |
| 4283986 | Self-penetrating wallboard anchor | Francis C. Peterson, Rodney O. Slotten | 1981-08-18 |
| 4223585 | Double-ended stud with combined driving and locking means | Walter T. Durham | 1980-09-23 |