US3274885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instruments for checking corneal lenses
Assignee: Lentilles Ophtalmiques Rationnelles
•
Filing: 1962-11-30
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Granted: 1966-09-27
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Rocher Pierre Michel
- 👤 Thomas Claude Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:04
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/02; G01M11/0207; G02; G02C; G02C7/00; G02C7/02; G02C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2539597A
Cited
US2533747A
Cited
US2765704A
Cited
US3027804A
Cited
US3019708A
Cited
US3068750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |