| TRANSAIRE(TM) RIGID GAS PERMEABLE CONTACT LENSES (P890044/S027) | Rand Scientific Corp. | 1994-01-26 |
| TRANSAIRE(TM) RIGID GAS PERMEABLE CONTACT LENSES (P890044/S026) | Rand Scientific Corp. | 1993-05-27 |
| TRANSAIRE(TM) RIGID GAS PERMEABLE CONTACT LENSES (P890044/S025) | Rand Scientific Corp. | 1993-02-09 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S024) | Rand Scientific Corp. | 1993-02-05 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S023) | Rand Scientific Corp. | 1992-09-30 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S022) | Rand Scientific Corp. | 1992-09-01 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S021) | Rand Scientific Corp. | 1992-06-26 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S020) | Rand Scientific Corp. | 1992-04-14 |
| ADD RGP LENS FINISHING LABORATORIES. (P890044/S019) | Rand Scientific Corp. | 1992-02-06 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S018) | Rand Scientific Corp. | 1991-12-18 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S017) | Rand Scientific Corp. | 1991-10-23 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S016) | Rand Scientific Corp. | 1991-09-19 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S015) | Rand Scientific Corp. | 1991-07-19 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S014) | Rand Scientific Corp. | 1991-07-08 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S013) | Rand Scientific Corp. | 1991-05-17 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S011) | Rand Scientific Corp. | 1991-04-05 |
| HYDROPERM (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S012) | Rand Scientific Corp. | 1991-03-18 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S010) | Rand Scientific Corp. | 1990-12-19 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S009) | Rand Scientific Corp. | 1990-10-25 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S008) | Rand Scientific Corp. | 1990-09-14 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S007) | Rand Scientific Corp. | 1990-08-15 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S006) | Rand Scientific Corp. | 1990-07-23 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S005) | Rand Scientific Corp. | 1990-07-05 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S004) | Rand Scientific Corp. | 1990-06-25 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S003) | Rand Scientific Corp. | 1990-06-04 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S002) | Rand Scientific Corp. | 1990-05-08 |
| TRANS AIRE (TM) RIGID GAS PERMEABLE CONTACT LENS (P890044/S001) | Rand Scientific Corp. | 1990-05-07 |