Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6142255 | Ladder, member for connecting a rail to a horizontal element of a ladder, and method | David E. Plotner, Richard P. Sulecki, Frederick J. Bartnicki, Mitchell H. Hetrich | 2000-11-07 |
| D422717 | Ladder top | Frederick J. Bartnicki, James Hand, Randall Bell, John J. Dylik | 2000-04-11 |
| D413990 | Front face of a ladder top | Frederick J. Bartnicki, James Hand, Randall Bell, John J. Dylik | 1999-09-14 |
| D404503 | Caddy top | Randall Bell, Walter B. Herbst, Eric C. Horne | 1999-01-19 |
| D397228 | Step ladder | Randall Bell, Walter B. Herbst, Eric C. Horne | 1998-08-18 |
| 5791439 | Ladder, member for connecting a rail to a horizontal element of a ladder, and method, and apparatus and method for holding a washer | David E. Plotner, Kevin McIntire, Richard P. Sulecki, Mitchell H. Hetrich, Frederick J. Bartnicki | 1998-08-11 |
| 5636706 | Ladder, member for connecting a rail to a horizontal element of a ladder, and method | David E. Plotner, Richard P. Sulecki, Frederick J. Bartnicki, Mitchell H. Hetrich | 1997-06-10 |
| D310884 | Cover for tops of ladders | Russell S. Patton, Dale R. King | 1990-09-25 |