| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| BIS | PL | ISSUED | AMERICAN NATIONAL PLG & HTG INC | 06/08/2007 |
| BIS | EQ | ISSUED | HAPPY CORPORATION | 10/13/2006 |
| BIS | PL | ISSUED | AUSTIN PLBG & HTG CO.INC | 10/10/2006 |
| BIS | EQ | ISSUED | HAPPY CORPORATION | 12/27/2005 |
| BIS | — | ISSUED | HAPPY CORPORATION | 12/13/2005 |
| BIS | EQ | ISSUED | HAPPY CORPORATION | 06/28/2005 |
| BIS | — | ISSUED | HAPPY CORPORATION | 06/28/2005 |