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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Fat Piu Lee | Sandwich, MA | — | Designer (Class III) | D3136 |
| Fernando D Gomes | Warwick, RI | — | Installer | L1398 |
| Fernando Sarmento | Coventry, RI | — | Installer | L1235 |
| Fletcher E Ferreira | Portsmouth, RI | — | Installer | L1963 |
| Francesco Cassisi | Johnston, RI | — | Installer | L1313 |
| Francis X Flynn | Charlestown, RI | — | Installer | L0672 |
| Frank A Turrisi | Pawcatuck, CT | — | Installer | L0790 |
| Frank B Riccio | North Scituate, RI | — | Installer | L1630 |
| Frank Gaglione | Johnston, RI | — | Installer | L0898 |
| Frank H Dimartino | West Greenwich, RI | — | Installer | L1759 |
| Frank J Martinelli | Scituate Drive, RI | — | Installer | L1593 |
| Frank N Passarella | North Kingstown, RI | — | Installer | L1641 |
| Frank Simonelli | Greenville, RI | — | Installer | L0003 |
| Friendly Septic Cleaning Llc | Warwick, RI | — | Septage Hauler | 939 |
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