| Owner | Filings | Most Recent |
|---|---|---|
| Trustees of Columbia University | 3 | 03/22/2026 |
| COLUMBIA UNIVERSITY | 3 | 03/21/2026 |
| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| BIS | OT | ISSUED | COLUMBIA UNIVERSITY | 03/30/2010 |
| BIS | OT | ISSUED | COLUMBIA UNIVERSITY | 12/02/2009 |
| BIS | EQ | ISSUED | ROCKLEDGE SCAFFOLD CORP | 05/02/2006 |
| BIS | EQ | ISSUED | ROCKLEDGE SCAFFOLD CORP | 03/31/2006 |