Inventor
Frederick J. Bartnicki
Inventor
Greenville, PA, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E06Cprimary
E06CLadders57%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges21%
LOC2514%
E04GScaffolding7%
PatentTitleYear
6,142,255'Ladder, member for connecting a rail to a horizontal element of a ladder, and method'2000D0422717'Ladder top'2000D0413990'Front face of a ladder top'19995,791,439'Ladder, member for connecting a rail to a horizontal element of a ladder, and method, and apparatus and method for holding a washer'19985,636,706'Ladder, member for connecting a rail to a horizontal element of a ladder, and method'19975,573,081'Ladder top with bail recess'19965,366,051'Hollow plastic ladder'19945,358,070'Ladder top'19945,259,480'Ladder top'1993D0340773'Ladder top'1993D0340291'Ladder pail shelf'19935,131,495'Hollow plastic ladder'19925,067,589'Extendable support'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1994Patents assigned to WERNER CO INC R D (6)· patent assignee history
1991–2000Based in Greenville, PA, US· patent location history
1994–2000Patents assigned to WERNER CO (7)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WERNER CO | 7 | 1994–2000 |
| WERNER CO INC R D | 6 | 1991–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Greenville, Pennsylvania, US | 13 | 1991–2000 |