US2990664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for finishing contact lenses
Assignee: Plastic Contact Lens Co
•
Filing: 1958-09-02
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Granted: 1961-07-04
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 Gilberto R Cepero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14; B24B9/142; Y; Y10; Y10S; Y10S451/00; Y10S451/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |