Issued Patents 2021
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11148305 | Shingle cutting knife blade | Benjamin J. Folkersen | 2021-10-19 |
| 11002014 | Layout starter and field shingle for sloped asphalt roofing | Benjamin J. Folkersen | 2021-05-11 |
| 10895076 | Field shingle layout marks on roof drip edge | Benjamin J. Folkersen | 2021-01-19 |
| 10889991 | Rake gutter, gutter cutting edge, and gutter and shingle | Benjamin J. Folkersen | 2021-01-12 |
| 10889992 | Roof headwall and sloped wall flashing with ledge | Benjamin J. Folkersen | 2021-01-12 |