Ownership History
| MARROB LLC | $1 | | 36775/0027 | 1F | 01/31/2022 |
| MCNAMARA ROBERT W TRS | $1,650,000 | | 16684/0151 | 00 | 12/22/2003 |
| MINNESOTA MINING & MFG | $1,500,000 | | 02998/0272 | 00 | 04/04/1985 |
| HIGH VOLTAGE ENGNEERING CORP | $1,050,000 | | 02517/0707 | 00 | 01/08/1982 |
| ZOCCHI JOHN B | $0 | | 02144/0182 | | 03/31/1975 |