US3283446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corneal contact lens tool
Assignee: Individual
•
Filing: 1965-10-05
•
Granted: 1966-11-08
•
Expires: 1985-10-05
Abstract
No abstract record available.
Inventors
- 👤 Feinbloom William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:30
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/0025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
IN COMBINATION, A HOLDER FOR A CONTACT LENS, AND GRINDING TOOL COMPRISING AN ELLIPSOIDAL GRINDING SURFACE HAVING SUCH MAJOR AND MINOR AXES AS TO IMPART AN INNER SURFACE TO THE LENS CLOSELY APPROXIMATING THE HUMAN CORNEA AND MEANS FOR MOUNTING SAID HOLDER AND TOOL FOR RELATIVE COAXIAL ROTATION.
References Cited (Backward Citations)
US152442A
Cited
US1303541A
Cited
US2237744A
Cited
US3032936A
Cited
US3087284A
Cited
US3117396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |