Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11692360 | Dual snap-in hinge and method of using the same | Frank W. Campbell | 2023-07-04 |
| 10724253 | Dual snap-in hinge and method of using the same | Frank W. Campbell | 2020-07-28 |
| 8079114 | Height adjustment device for a hinge | Frank W. Campbell | 2011-12-20 |
| 7694388 | Adjustable hinge | Frank W. Campbell | 2010-04-13 |
| 7552511 | Adjustable hinge | Frank W. Campbell | 2009-06-30 |
| 7516517 | Hinge device | — | 2009-04-14 |
| 7350272 | Hinge device | — | 2008-04-01 |
| 6715181 | Hinge device of the snap-in type | — | 2004-04-06 |
| 6497072 | Sliding panel for longitudinal and lateral movement in a frame structure | — | 2002-12-24 |
| 5806144 | Device for a door hinge structure | — | 1998-09-15 |
| 5468061 | Cabinet body structure and articulated joint means for use with the structure | Yusho Nakamoto | 1995-11-21 |
| 4921382 | Screw lock | Berit Fries | 1990-05-01 |